--- title: Base date: 2018-11-07T13:39:00-08:00 author: Admin Istrator canonical_url: "https://www.polartec.com/fabrics/base" section: Interior Pages --- # Base Layers. ### Unrivalled fabric comfort and performance, our base layer materials are designed to stretch, wick moisture and breath next to your skin. ### Our Base Layers. [ ![Delta™]() ### Delta™ #### Beyond Feeling Cool. ![]()Cool touch. ![]()Regulated drying. ![]()Highly breathable. ![]()Odor reducing. ![]()Reduced cling. ![]()Superior wicking. ](https://www.polartec.com/fabrics/base/delta) [ ![Power Dry™]() ### Power Dry™ #### Beyond Moisture Control. ![]()Bi-component Knit. ![]()Superior wicking. ![]()Highly breathable. ![]()Lightweight. ![]()Fast drying. ![]()Comfortable next to skin. ](https://www.polartec.com/fabrics/base/power-dry) [ ![Power Grid™]() ### Power Grid™ #### Beyond Ready. ![]()Bi-component Knit. ![]()Superior wicking. ![]()Highly breathable. ![]()Warmth without weight. ![]()Efficient performance. ![]()Lightweight. ](https://www.polartec.com/fabrics/base/power-grid) [ ![Power Stretch™]() ### Power Stretch™ #### Beyond The Moves. ![]()Dual surface. ![]()Four-way stretch. ![]()Shape retention. ![]()Highly breathable. ![]()Superior wicking. ![]()Fast drying. ](https://www.polartec.com/fabrics/base/power-stretch) [ ![Power Stretch™ Pro]() ### Power Stretch™ Pro #### Beyond The Toughest Moves. ![]()Dual surface. ![]()Resists abrasion. ![]()Four-way stretch. ![]()Shape retention. ![]()Highly breathable. ![]()Superior wicking. ](https://www.polartec.com/fabrics/base/power-stretch-pro) [ ![Power Wool™]() ### Power Wool™ #### Beyond Natural Performance. ![]()Bi-component knit. ![]()Fine wool interior. ![]()Synthetic exterior. ![]()Naturally odor reducing. ![]()Shape retention. ![]()Highly breathable. ](https://www.polartec.com/fabrics/base/power-wool) ### What is a base layer fabric? ### What is a base layer fabric? Base layer fabrics are designed to sit next to your skin and help manage moisture and temperature. They should wick sweat, allow airflow, stretch with your body, and help maintain warmth without trapping excess heat during activity. <br> <br> For different base layer needs, Polartec offers options like <a href="https://www.polartec.com/fabrics/base/delta">Polartec® Delta™</a> for airflow and reduced wet cling, <a href="https://www.polartec.com/fabrics/base/power-grid">Polartec® Power Grid™</a> for lightweight warmth and moisture wicking, and <a href="https://www.polartec.com/fabrics/base/power-wool">Polartec® Power Wool™</a> for Merino wool performance with faster drying, better durability, and less shrinkage. ### What makes Polartec base layer fabrics good for active use? ### What makes Polartec base layer fabrics good for active use? Polartec base layer fabrics are built to manage sweat, airflow, and movement during a wide range of activities. They wick moisture away from your skin, help release excess heat, dry quickly, and stretch with your body so the fabric stays comfortable as effort levels change. <br> <br> For active use, <a href="https://www.polartec.com/fabrics/base/power-dry">Polartec® Power Dry™</a> delivers advanced moisture wicking to help keep you dry and comfortable, while <a href="https://www.polartec.com/fabrics/base/power-stretch-pro">Polartec® Power Stretch™ Pro</a> Pro adds four-way stretch, durability, and abrasion resistance for more demanding movements. ### Which Polartec base layer fabric is best for cold weather? ### Which Polartec base layer fabric is best for cold weather? For cold weather, <a href="https://www.polartec.com/fabrics/base/power-grid">Polartec® Power Grid™</a> is the strongest base layer option because it provides lightweight fleece warmth, thermoregulation, and moisture wicking without adding bulk. <br> <br> <a href="https://www.polartec.com/fabrics/base/power-dry">Polartec® Power Dry™</a> is also effective for active cold weather use when sweat management and fast drying are the top priorities. For very cold conditions when insulation is the priority, <a href="https://www.polartec.com/fabrics/base/alpha">Polartec® Alpha™</a> can add breathable warmth as part of a layered system. ### Can fleece be used as a base layer? ### Can fleece be used as a base layer? Yes, fleece can be used as a base layer if it has strong moisture wicking and breathability. Traditional fleece is usually designed as a mid layer or insulation layer, so it may not manage sweat as effectively during high intensity activity. <br> <br> For next to skin performance, <a href="https://www.polartec.com/fabrics/base/power-grid">Polartec® Power Grid™</a> is a strong option because it is a lightweight fleece that combines warmth, moisture wicking, and thermoregulation. <a href="https://www.polartec.com/fabrics/base/power-dry">Polartec® Power Dry™</a> and <a href="https://www.polartec.com/fabrics/base/power-stretch-pro">Polartec® Power Stretch™ Pro</a> are also engineered for direct skin contact, with advanced moisture management for active use. ### What is the difference between a moisture wicking base layer and a thermal base layer? ### What is the difference between a moisture wicking base layer and a thermal base layer? A moisture wicking base layer focuses on moving sweat away from your skin to help keep you dry during activity. <a href="https://www.polartec.com/fabrics/base/power-dry">Polartec® Power Dry™</a> is ideal when sweat management is the top priority. <br> <br> A thermal base layer focuses more on warmth while still managing moisture. <a href="https://www.polartec.com/fabrics/base/power-grid">Polartec® Power Grid™</a> is built for cold weather and provides lightweight fleece warmth, breathability, and moisture control without added bulk. ### Are thermal base layers breathable? ### Are thermal base layers breathable? Yes. Polartec® thermal base layers are engineered to hold warmth while allowing heat and moisture to move through the fabric. <br> <br> For example, <a href="https://www.polartec.com/fabrics/base/power-grid">Polartec® Power Grid™</a> features a lightweight grid construction that creates airflow, manages moisture, and helps you stay warm without overheating during activity. ### Which Polartec base layer fabric is best for warm weather or high output activities? ### Which Polartec base layer fabric is best for warm weather or high output activities? For warm weather and high output activities, <a href="https://www.polartec.com/fabrics/base/delta">Polartec® Delta™</a> is the best choice. It is specifically designed to increase airflow, reduce wet cling, and enhance evaporation to support the body’s natural cooling process during intense activity. <br> <br> For a more versatile lightweight base layer, <a href="https://www.polartec.com/fabrics/base/power-dry">Polartec® Power Dry™</a> is also a strong option. As an all-weather moisture wicking fabric, it helps regulate body temperature across a wider range of conditions. ### What should I look for in a base layer for mobility? ### What should I look for in a base layer for mobility? If mobility is a priority, look for a base layer with four-way stretch, shape retention, moisture management, and a smooth feel that layers comfortably under other gear. <br> <br> <a href="https://www.polartec.com/fabrics/base/power-stretch">Polartec® Power Stretch™</a> is a strong option for flexible, breathable movement, while <a href="https://www.polartec.com/fabrics/base/power-stretch-pro">Polartec® Power Stretch™ Pro</a> adds extra durability for more demanding use. Both are designed to deliver dynamic stretch and recovery that moves with the body without restricting activity. ## Go Beyond, Today. From industry insider access, to community updates, be the first to know what we’re doing next. ## Made With Base Layers. Delta™. Power Dry™. Power Grid™. Power Stretch™. Power Stretch™ Pro. Power Wool™. ### Delta™. - Delta™. - Power Dry™. - Power Grid™. - Power Stretch™. - Power Stretch™ Pro. - Power Wool™. [ ![Range Light Tank]() Portal. ### range light tank. Made with **Delta™.** ](https://www.polartec.com/partners/products/portal-range-light-tank) [ ![L.I.M. Delta Tees]() Haglöfs. ### l.i.m. delta tees. Made with **Delta™.** ](https://www.polartec.com/partners/products/haglofs-hagl%C3%B6fs-l-i-m-delta-tees) [ ![Apex Aeon Jersey]() MAAP. ### apex aeon jersey. Made with **Delta™.** ](https://www.polartec.com/partners/products/maap-apex-aeon-jersey) [ ![Short Sleeve Marina Stripe Tee]() Vuori. ### short sleeve marina stripe tee. Made with **Delta™.** ](https://www.polartec.com/partners/products/vuori-short-sleeve-marina-stripe-tee) [ ![Active Cooling Sleeveless]() Castelli. ### active cooling sleeveless. Made with **Delta™.** ](https://www.polartec.com/partners/products/castelli-active-cooling-sleeveless) [View All Delta™. ](/products?Fabric%20Technology=Delta%E2%84%A2) [ ![Flexair Long-Sleeve Jersey]() Fox Racing. ### flexair long-sleeve jersey. Made with **Power Dry™.** ](https://www.polartec.com/partners/products/fox-racing-flexair-long-sleeve-jersey) [ ![AERO RACE Jersey]() Santini. ### aero race jersey. Made with **Power Dry™.** ](https://www.polartec.com/partners/products/santini-aero-race-jersey) [ ![Outsider Polartec® Hoodie]() MANORS. ### outsider polartec® hoodie. Made with **Power Dry™.** ](https://www.polartec.com/partners/products/manors-manors-outsider-polartec-hoodie) [ ![ARCANE PRIME MIPS® Helmet]() Salomon. ### arcane prime mips® helmet. Made with **Power Dry™.** ](https://www.polartec.com/partners/products/salomon-salomon-arcane-prime-mips-helmet) [ ![Garhwal Hybrid Touch-Tec]() Reusch. ### garhwal hybrid touch-tec. Made with **Power Dry™.** ](https://www.polartec.com/partners/products/reusch-garhwal-hybrid-touch-tec) [View All Power Dry™. ](/products?Fabric%20Technology=Power%20Dry%E2%84%A2) [ ![Men's R1® Fleece Pullover]() Patagonia. ### men's r1® fleece pullover. Made with **Power Grid™.** ](https://www.polartec.com/partners/products/patagonia-inc-mens-r1-fleece-pullover) [ ![Women's R1® Fleece Pullover]() Patagonia. ### women's r1® fleece pullover. Made with **Power Grid™.** ](https://www.polartec.com/partners/products/patagonia-inc-womens-r1-fleece-pullover) [ ![Women's Thermal Base layer long sleeves]() MAAP. ### women's thermal base layer long sleeves. Made with **Power Grid™.** ](https://www.polartec.com/partners/products/maap-womens-thermal-base-layer-long-sleeves) [ ![Women's Thermal Base layer Tee]() MAAP. ### women's thermal base layer tee. Made with **Power Grid™.** ](https://www.polartec.com/partners/products/maap-womens-thermal-base-layer-tee) [ ![Women's Thermal Base layer Vest]() MAAP. ### women's thermal base layer vest. Made with **Power Grid™.** ](https://www.polartec.com/partners/products/maap-womens-thermal-base-layer-vest) [ ![Men's Thermal Base layer long sleeves]() MAAP. ### men's thermal base layer long sleeves. Made with **Power Grid™.** ](https://www.polartec.com/partners/products/maap-mens-thermal-base-layer-long-sleeves) [ ![Men's Thermal Base layer Tee]() MAAP. ### men's thermal base layer tee. Made with **Power Grid™.** ](https://www.polartec.com/partners/products/maap-mens-thermal-base-layer-tee) [ ![Men's Thermal Base layer Vest]() MAAP. ### men's thermal base layer vest. Made with **Power Grid™.** ](https://www.polartec.com/partners/products/maap-mens-thermal-base-layer-vest) [View All Power Grid™. ](/products?Fabric%20Technology=Power%20Grid%E2%84%A2) [ ![Women's falketind warm1 Jacket]() Norrøna. ### women's falketind warm1 jacket. Made with **Power Stretch™.** ](https://www.polartec.com/partners/products/norr%C3%B8na-womens-falketind-warm1-jacket) [ ![Men's falketind warm1 Jacket]() Norrøna. ### men's falketind warm1 jacket. Made with **Power Stretch™.** ](https://www.polartec.com/partners/products/norr%C3%B8na-mens-falketind-warm1-jacket) [View All Power Stretch™. ](/products?Fabric%20Technology=Power%20Stretch%E2%84%A2) [ ![Women's Power Houdi]() Houdini. ### women's power houdi. Made with **Power Stretch™ Pro.** ](https://www.polartec.com/partners/products/houdini-sportswear-ab-womens-power-houdi) [ ![Men's Power Houdi]() Houdini. ### men's power houdi. Made with **Power Stretch™ Pro.** ](https://www.polartec.com/partners/products/houdini-sportswear-ab-mens-power-houdi) [ ![Women's Kyanite Hoody]() ARC'TERYX. ### women's kyanite hoody. Made with **Power Stretch™ Pro.** ](https://www.polartec.com/partners/products/arcteryx-womens-kyanite-hoody) [View All Power Stretch™ Pro. ](/products?Fabric%20Technology=Power%20Stretch%E2%84%A2%20Pro) [View All Power Wool™. ](/products?Fabric%20Technology=Power%20Wool%E2%84%A2) ## Partner Portal. Whether you’re an existing Partner, or want to join us in setting the standard for fabric innovation, explore our Partner Portal to make products that go beyond. [Enter Portal. ](https://www.polartec.com/partner-portal)