Polartec is a performance-textile brand, not a single fiber or one universal fabric. It is best known for the synthetic fleece first developed by Malden Mills in 1981, but the current portfolio also includes next-to-skin knits, active insulation, stretch fabrics, weather-protection systems and flame-resistant technologies. Composition and performance therefore depend on the named Polartec technology and the specific fabric style selected.
For buyers, the practical rule is simple: do not source on the word “Polartec” alone. Confirm the exact technology, style number, fiber composition, weight, width, color, finish, approved application and required test data before sampling or bulk production.
Polartec Fabric at a Glance
| Attribute | Buyer-focused summary |
| Material type | Branded performance textile; many styles are polyester knits, while some use wool, elastane, membranes or other components. |
| Best known for | Synthetic fleece with warmth-to-weight, breathability, fast drying and easy-care performance. |
| Main families | Base layers, insulation, weather protection and flame-resistant fabrics. |
| Common uses | Fleece jackets, midlayers, base layers, active insulation, stretch garments, rain shells, gloves, hats, workwear and military applications. |
| Traditional fleece weights | Micro, 100, 200 and 300 Series; these are product/weight classes, not micron-thickness measurements. |
| Care | Follow the garment label. Polartec advises cold water, mild detergent and no fabric softener for its Fleece Series. |
| Key sourcing variables | Technology and style number, composition, mass per unit area, finish, color, hand feel, stretch, moisture management, wind/water performance, test method and destination-market documentation. |
What Is Polartec Fabric?
Polartec is a Milliken brand that develops engineered textiles for outdoor, lifestyle, workwear and defense markets. The name is often used informally as shorthand for fleece, but authentic Polartec fabrics cover a much wider technical range.
Classic Polartec fleece is a knitted synthetic pile fabric. Its raised surface creates air spaces that help retain body heat while keeping the material relatively light. Compared with traditional wool fleece, polyester fleece generally dries faster and absorbs less water into the fiber itself. That does not mean every Polartec fabric has the same insulation, wicking, stretch, wind resistance or water resistance; those properties are engineered differently across product families.
Core Properties of Polartec Fleece
- Warmth without excessive weight: the knit and raised pile trap insulating air. Actual thermal performance varies by construction, thickness, garment design and test method.
- Breathability: classic fleece allows air and water vapor to move, which supports use as a midlayer. Wind-resistant or membrane-backed styles trade some airflow for protection.
- Fast drying: polyester fibers are hydrophobic, but moisture can still remain between yarns and within the fabric structure. Drying time must be assessed on the finished fabric or garment.
- Moisture management: base-layer technologies such as Power Dry and Power Grid are designed to move moisture. It is inaccurate to classify the entire Polartec range as either moisture-wicking or non-wicking.
- Durability and pilling: performance depends on fiber, knit, surface finishing, garment construction and laundering. Request the relevant pilling, abrasion and dimensional-stability results instead of assuming one rating for all styles.
- Static and lint attraction: polyester fleece can build static electricity, particularly in dry conditions, and a raised surface can attract hair or lint.
- Heat sensitivity: polyester can be damaged by excessive heat. Buyers and consumers should follow the finished garment’s care label rather than applying one temperature rule to every product.
A Short History of Polartec
Malden Mills developed the original synthetic fleece in 1981. The fabric helped establish a lighter, fast-drying alternative to heavy wool layers, and the Polartec brand was introduced in 1991. In 1993, the company launched its first fleece using recycled content. Polartec later expanded into soft shells, base layers, active insulation and weather-protection fabrics.
Polartec became part of Milliken & Company in 2019. Current company information identifies U.S. fabric formation in Hudson, New Hampshire, and finishing at Polartec Tennessee Manufacturing in Cleveland, Tennessee. Buyers should confirm the manufacturing origin for the exact style and production lot rather than treating one corporate location as the origin of every product.
How Is Polartec Fleece Made?
The exact production route is proprietary and varies by style, but a conventional polyester fleece workflow generally includes the following stages:
- Fiber and yarn preparation. Polyester may be made from virgin feedstock, post-consumer recycled feedstock or a specified blend. Recycled-content claims should be supported by style- and supply-chain-specific documentation.
- Knitting. Fleece is typically knitted rather than woven. Yarn selection and knit construction establish the base fabric’s weight, stretch, stability and airflow.
- Dyeing and heat setting. Process conditions depend on fiber, color, construction and performance target. The original article’s reference to one 12-hour dyeing cycle was a historical example, not a reliable specification for current production.
- Surface finishing. Brushing, napping and shearing raise and even the pile, creating the soft surface and insulating air spaces associated with fleece.
- Functional finishing or lamination. A style may receive water-repellent, odor-control, flame-resistant or other treatment, or be combined with a membrane. The chemistry and legal scope must be confirmed for the destination market.
- Inspection and testing. Relevant checks can include weight, width, shade, appearance, pilling, abrasion, dimensional stability, moisture management, stretch and recovery, air permeability, water resistance or flame performance, depending on the specification.
For a broader procurement workflow, use a staged fabric quality inspection guide covering specification review, sampling and bulk checks.
Main Types of Polartec Fabric
1. Base-layer fabrics
Polartec base-layer technologies are designed for next-to-skin moisture and temperature management. Power Dry uses a bi-component construction to move moisture toward the outer surface. Power Grid combines a grid structure with moisture management and reduced bulk. Power Wool combines natural wool against the skin with a synthetic outer surface in selected styles. Delta is designed to increase airflow, reduce wet cling and support evaporative cooling.
2. Insulation fabrics
The insulation portfolio includes Fleece Series, High Loft, Thermal Pro, Wind Pro, Power Air, Power Fill and Alpha. Alpha is an active-insulation system intended to regulate warmth during changing activity levels. Alpha Direct can be used without a separate liner in appropriate garment constructions. Power Air uses encapsulated air pockets and is engineered to reduce fiber-fragment shedding compared with its baseline fabric under the cited AATCC 212 test method.
3. Stretch and hybrid fabrics
Power Stretch is a four-way stretch, shape-retaining fabric designed for movement, warmth and moisture management. Buyers looking for non-branded stretch options can also review FabricsTrades’ four-way stretch fabric category, but a generic category fabric should not be represented as Polartec unless brand authorization and provenance are documented.
4. Weather-protection fabrics
Weather-protection products include Windbloc and members of the Power Shield family. Constructions may use tighter knits, durable water-repellent finishes or membranes. “Water-resistant,” “wind-resistant” and “waterproof” are not interchangeable claims; specify the required test method and threshold for the finished fabric or garment.
5. Flame-resistant fabrics
Polartec offers flame-resistant versions of selected base-layer, stretch and insulation technologies. Flame resistance is safety-critical and application-specific. Do not infer compliance from the product-family name: confirm the exact style, applicable standard, certification or test report, garment design and end-use requirements.
Polartec Fleece Weight Classes
Polartec’s current Fleece Series is offered as Micro, 100, 200 and 300 Series. These labels broadly move from ultralight to heavyweight insulation, but they are not universal GSM values and should not be described as micron thicknesses. Ask for the actual mass per unit area, thickness, width and tolerances of the selected style.
| Series | General positioning | Typical development question |
| Micro | Ultralight fleece for mild conditions or layering | Is the hand, coverage and warmth sufficient at the target garment weight? |
| 100 | Lightweight, breathable midlayer | Does the style balance warmth, packability and durability? |
| 200 | Versatile midweight insulation | Will it be used alone, under a shell or in a hybrid panel design? |
| 300 | Heavyweight fleece for greater insulation | Are bulk, seam construction and drying time acceptable for the product? |
How Is Polartec Fabric Used?
Applications include fleece jackets, sweaters, hoodies, midlayers, base layers, sweatpants, tights, hats, gloves, blankets, workwear and military clothing. Weather-protection technologies are used in soft shells, rain shells and protective accessories. The best product family depends on whether the priority is next-to-skin drying, static insulation, active insulation, stretch, wind resistance, rain protection or flame resistance.
Where Is Polartec Fabric Produced?
Polartec’s current corporate information highlights U.S. manufacturing in New Hampshire and Tennessee. Historical references to other facilities should not be used to declare current origin for a specific order. Country of origin can depend on where the relevant transformation occurs, and a garment’s origin is not necessarily the same as the fabric’s origin. Confirm mill location, lot traceability and origin documentation during quotation.
How Much Does Polartec Fabric Cost?
There is no single public price for Polartec fabric. Cost varies by technology, style, weight, recycled content, membrane or finish, color, minimum order, test requirements, freight, duties and authorization route. Base fleece generally has a different cost structure from membrane-backed weather protection or specialized flame-resistant fabric. Obtain a quotation against a complete specification and confirm whether sampling, testing, labels, licensing, freight and duties are included.
Environmental Considerations
Polyester fleece is durable and can incorporate recycled feedstock, but recycled content alone does not make a textile environmentally sustainable. Polyester is not readily biodegradable, production has energy and chemical impacts, and fleece can release fiber fragments during manufacturing, wear and laundering.
Polartec states that more than 200 fabric styles contain 50–100% post-consumer recycled plastic bottles and that selected Shed Less technologies reduce fiber-fragment shedding under AATCC 212 testing. Those are product- and test-specific claims. Buyers should request the exact style’s composition and evidence, avoid generalizing a portfolio claim to every fabric, and consider garment durability, care, end-of-life design and supply-chain traceability.
Where recycled content is a core requirement, compare the technical specification and documentation with the available recycled fabric category rather than relying on a generic sustainability label.
Certifications and Claims: What Buyers Should Verify
The original article stated that all Polartec products were OEKO-TEX certified and treated that certification as proof of sustainable production. That conclusion is too broad. OEKO-TEX STANDARD 100 primarily addresses testing for harmful substances in the certified article; it is not a blanket lifecycle sustainability certification, and certificate scope and validity can change.
- the exact Polartec technology and style number;
- current certificate number, scope, product class and validity on the issuing body’s database;
- fiber composition and any recycled-content chain-of-custody documentation;
- restricted-substance declarations and test reports applicable to the destination market;
- performance claims linked to named test methods and the approved production lot; and
- whether trademark labels, hangtags or marketing claims require authorization.
Current Regulatory and Market Update
Water-repellent and membrane products deserve particular attention because PFAS rules are changing across major markets. Polartec states that it achieved non-PFAS materials across its products in 2022, but buyers should still obtain style-specific chemical and test documentation and confirm the terminology used by the supplier. “PFAS-free” can be defined differently in laws, test methods and commercial specifications.
In the European Union, Regulation (EU) 2024/2462 added a REACH restriction for PFHxA, its salts and PFHxA-related substances. For consumer clothing, related accessories and footwear, specified concentration limits apply from 10 October 2026, subject to scope and exemptions. Buyers can review the FabricsTrades overview of the EU REACH PFHxA restriction and China fabric supply chain alongside the official EUR-Lex regulation and should confirm how the rule applies to the exact article and date of placing on the market.
California AB 1817 has restricted regulated PFAS in many new textile articles since 1 January 2025 and requires manufacturers to provide a certificate of compliance; a later date applies to qualifying outdoor apparel for severe wet conditions. See the FabricsTrades discussion of the California PFAS textile requirements and verify the current statutory text for the product category.
Before quotation and sampling, communicate the destination market, sale date, end use, coating or membrane chemistry, applicable restricted-substance list, test method, reporting threshold and documentation format. Legal and retailer requirements can differ, and neither a branded technology name nor an internal article proves compliance.
How to Specify and Source Polartec Fabric
- Define the end use and performance priority: base-layer drying, insulation, stretch, wind resistance, rain protection or flame resistance.
- Name the exact technology and obtain the style number. Record composition, weight, width, color, finish and approved application.
- Request a swatch or development yardage and compare hand feel, shade, stretch, recovery, surface appearance and compatibility with trims and seams.
- Agree test methods and acceptance limits before bulk production. Select tests that match the intended claim and garment construction.
- Confirm brand authorization, traceability, country of origin, current certificates and restricted-substance documentation.
- Approve a sealed sample and shade standard, then inspect bulk fabric by lot before cutting.
For programs that combine branded and custom performance textiles, FabricsTrades can support sourcing, sampling, specification development and quality coordination. Review the broader OEM fabric category and communicate brand, licensing and documentation requirements at the start; availability and authorization must be confirmed for each inquiry.
Frequently Asked Questions
Is Polartec a fiber or a fabric?
Polartec is a performance-textile brand. Many Polartec fabrics are polyester knits, but composition and construction vary by technology and style.
Is all Polartec fabric fleece?
No. Polartec is best known for fleece, but its portfolio also includes base-layer, stretch, active-insulation, weather-protection and flame-resistant fabrics.
Is Polartec fleece waterproof?
Classic fleece is not automatically waterproof. Some Polartec weather-protection technologies use membranes, tighter constructions or finishes. Verify water-resistance or waterproof claims against the exact style and test method.
Does Polartec fleece wick moisture?
It depends on the technology. Power Dry and Power Grid are designed for moisture management; classic fleece is primarily an insulation fabric. Do not apply one moisture-wicking claim to the entire portfolio.
What do Polartec 100, 200 and 300 mean?
They are Fleece Series weight classes moving broadly from lightweight to heavyweight. They are not micron measurements and should not substitute for the actual GSM, thickness and tolerance of a selected style.
Is Polartec fabric made from recycled polyester?
Many styles use post-consumer recycled polyester, but not every style has the same recycled content. Request composition and claim documentation for the exact product.
Can FabricsTrades manufacture Polartec fabric?
Polartec is a protected brand, so manufacturing, resale and labeling require appropriate authorization and traceability. FabricsTrades can discuss sourcing and alternative custom performance-fabric development, but availability and brand authorization must be confirmed for each project.
Conclusion
Polartec changed outdoor clothing through synthetic fleece, but today the brand covers multiple engineered fabric systems. Successful sourcing starts with the exact technology and style—not the brand name alone—followed by sample approval, agreed testing, traceable documentation and destination-market review. Share the garment use, target market, performance requirement, quantity and timeline before requesting a quote so the supplier can evaluate a suitable fabric route.
