Best Polyester Womens Athletic Base Layers in 2026

FEATURES: Quick Dry, Anti-Odor, 4-Way Stretch, Lightweight, Breathable, Ultra-Soft, Fitted, Tag Free Label. Perfect for your basic needs and everyday activities. Offers maximum stretch while being lightweight, comfortable, and snug fitting. Make this your go-to thermal bottom as your first layer on a long run or your only layer while lounging on the couch or sleeping at night.

FABRIC: 90% Polyester, 10% Spandex. Lightweight knit with a lot of stretch. Lightly brushed on both sides which gives a soft cozy feel that is smooth against the body.

COLD WEATHER: Lightweight warmth, can be worn invisibly as first layer underneath any other clothing.

Our Most Legendary: Super-light HeatGear fabric delivers superior coverage without weighing you down

Material wicks sweat & dries really fast

4-way stretch construction moves better in every direction

Machine wash cold, Import

Ready for Adventure: Always enjoy cold weather adventures with the Icebreaker Merino Women’s 175 Standard Merino Wool Shirt! These women’s thermals are long sleeve and feature a comfortable crew neck for year-round layering performance and style.

Amazingly Soft Women’s T-Shirts: These long sleeve tee shirts for women are made with 100% Merino Wool, an annually renewable resource that naturally resists odors, regulates body temperature in all weather conditions, and helps manage moisture.

All Day Comfort: Breathable and versatile, this women’s long sleeve tee shirt is quick-drying, with offset shoulder seams to reduce chafing, and ribbed fabric for all day comfort ; This is a slim fit long sleeve shirt for women for classic style.

TSLA Thermal Shirt Series designed for cold weather.

[Materials] Mix of Polyester & Spandex fabric is excellent elasticity with enhanced range of motion.

[Fleece Lining] Thermal fleece lining designed to enhance the warmth and thermal insulation.

Sun Protection: breathable face cover design for your outdoor activities which provides windproof and UPF50+ for your top,facial, neck, head for all-round protection from the sun's harmful UVA/UVB rays.

Quick Dry & Breathable: Actively wicks moisture away from the skin, keeping you dry and comfortable. Great when you're out and about, and after washing too.

The 4-Way Stretch: The 4-way stretch & non see through fabric wicks moisture away from your skin for unrestricted movement and whole day comfort.

QUALITY MIDWEIGHT BASELAYER: 100% Merino Wool is super soft and extremely comfortable. This three season merino wool crew neck thermal has the versatility and warmth to make this an essential part of your outdoor gear. Its moisture wicking properties means you won’t have to wash it as often so you’ll use even less water. Sizes XS to 3XL in a regular fit. Minus33 offers a great size selection. Outfitting anyone from the Hard-at-Work to the Hard-at-Play.

PERFECT TO WEAR: for any activity. Wear this top as a base layer to go skiing, snowboarding, hiking, running, ice fishing, hunting, the activities are endless! This midweight long sleeve can be worn whether it's as low as 0 degrees or as high as 60. Our crew has tagless construction so you don't have to worry about the annoyance of the unwanted itch. You can wear this long sleeve as a base layer, mid layer, or even outer layer so you can get as many uses out of it as you would like!

EXPERIENCED BRAND: Although there are many copy-cats on the market today, Minus33 has been a trusted brand since 2004. We see it all – from beautiful fall leaves, to white, snowy winters, to colorful springs and summers. We’re New Englanders, plain and simple. We’ve been hiking, camping, skiing, and everything else in between since we were kids. No amount of snow keeps us down, and we only continue to thrive in the summer.

Material: Soft, Sleek, Lightweight, Breathable Polyester Fabrics

Quick Dry:Breathable, Lightweight, Quick-Drying Fabric Actively Wicks Moisture Away from the Skin, Keep You Cool and Dry and Comfy in Running, Hiking.

UV Protection: The Fabric Rating UPF 50+ Protects Your Skin from the Harmful UVA/UVB Rays, Keeping You Cool.

MIDWEIGHT – Womens Wool Base Layer Top Available in: Midweight = 250 g/m², Heavyweight = 320 g/m². FREE MERINO WOOL HIKING SOCKS ($21 VALUE!) – Package includes Merino Wool Zip Sweater Women Midweight 250 g/m² + Wool Socks. Cool Packaging! MAKES A GREAT GIFT!

SUPER SOFT & COMFORTABLE – 100% Superfine 18.5 Micron Zip Up Wool Sweater for Women provides all day comfort and no itch! Designed for daily wear without rubbing, overheating, or bunching of regular cotton.

MOISTURE WICKING & ODOR RESISTANT – Womens Quarter Zip Wool Sweater natural wicking and odor-resistant properties allow it to absorb moisture better than any other fabric, keeping you dry and fresh.

Material: 87% merino wool, 13% nylon

Insulation Weight: lightweight (150g/m2)

Fit: slim

NOTE: Store KLOTHO is the only distributor, PLEASE NOTE. Material: Soft and stretchy. Super comfy and light weight but not too sheer. Breathable fabric that retains shape and doesn't shrink.

Style: Well made and beautiful fit, slim fit but not too tight. Sexy short corp top which stay right above your belly button and makes you look taller.

Occasion: Casual wear or workout. You can wear to the gym, yoga, hang out or Cosplay. Great for dress up in Halloween, nice gift.

Moisture-Wicking Fabric: Made of 85% microfiber polyester and 15% spandex with Silvadur Intelligent Freshness, our thermal shirts for women help control odor to keep you fresh and dry

Athletic Fit: The perfect long-sleeve baselayer shirt for women, the Quest features a tagless design, flat seams for a smooth and close ultra-comfortable fit

Efficient Design: Long-sleeve undershirt for women features raglan sleeves with thumbhole cuffs for easy layering; Drop tail maintains coverage without restricting freedom of motion

Quick dry technology

Lightweight flexible and durable

Crew neck construction

【NOTICE】The Workout Shirts Is Tight-fitting.if You Want To Loose Fit, Please Order One-two Larger Size Than Usual.

【FABRIC】This Workout Shirts made of professional fabric, the sweat produced during exercise is quickly dried to leave comfort to your skin.Can be worn as Compression top under the sweatshirt.The high elasticity ensure that athletic Tee top will not go up.

【INTIMATE LENGTH】The length of your clothes can protect your abdomen and prevent you from catching cold during exercise.

Polyester/elastane. Crewneck blouse.

Omni-Wick technology: advanced evaporation; keeps you dry and comfortable.

Omni-Heat reflective technology reflects back the heat your body generates.

Soft, comfy, lightweight and feels great against your skin, this turltneck t-shirt will give you a comfy and breezy wearing experience. You will stay comfy all day with the cute shirt

Women's basic turtleneck long sleeve tops are great stretchy, slim fit, easy to fit any body figure. A great option for everyday wear or as a underscrubs piece or loungewear at home

The turtleneck is lightweight, which makes it very comfortable to wear under a few layers, but it's also warm enough that you can wear it alone

【Breathable & Quick-dry】This cycling undershirt designed with big hole mesh, high moisture wicking and venting. Which can quickly removes sweat from your body and helps you stay comfortable and dry during cycling sessions

【 Sleeveless Ergonomic Fit】Special sleeveless cutting let the singlet can be wearing as a layer under any sport clothes.

【Premium Material】lightweight and compression, the high stretch baselayer will give you high performance and exceptional comfort without any itching feelings

Slim fit sits close to the body

Extra-long body allows you to strap in without your shirt coming untucked

DRYRIDE Ultrawick midweight fabric pulls moisture away from your skin

【Feature】- Hitting the gym? Our full-length and cropped leggings will wick away sweat as you train with zoned compression. When feeling nothing is everything. YIVISE Womens Workout Collection. From shorts and leggings to sweatpants and trousers, our women's bottoms are here for you whether you're running, training, stretching or relaxing. Max out your stride in loose-fitting shorts with pockets for storage, or focus on your yoga practice in a tighter pair that will free you from distraction.

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4-way stretch fabric enhances comfort and mobility

Insulating and wind resistant material keeps the heat in and the cold out

Wicking technology pulls moisture away from the body, leaving you drier and warmer

Seamless Construction

Avra fabric provides moisture wicking

Ideal as your base layer on high output, cold winter activities

NORDIC PERFORMANCE: Designed in Sweden - a land blessed with 200 days of challenging conditions. Our highly functional Active Intensity Pants are built for dedicated athletes who work out with a purpose.

INNOVATIVE: Keeps you dry and comfortable during intensive training in medium cold to cold temperatures.

FUNCTIONAL: Stretchy, soft material with seamless construction, zone-adapted design and ergonomic fit.

【Feature】- Hitting the gym? Our full-length and cropped leggings will wick away sweat as you train with zoned compression. When feeling nothing is everything. YIVISE Womens Workout Collection. From shorts and leggings to sweatpants and trousers, our women's bottoms are here for you whether you're running, training, stretching or relaxing. Max out your stride in loose-fitting shorts with pockets for storage, or focus on your yoga practice in a tighter pair that will free you from distraction.

【Feature】- high waisted active shorts black shorts tight shorts mens jersey shorts white high waisted bell bottom jeans corduroy shorts designer shorts hot yoga pants baggy shorts high rise shorts ripped jean shorts boyfriend shortsripped denim shorts yoga pants linen shorts romper shorts jumpsuit shorts mini shorts tight yoga pants shorts knit shorts petite sweatpants black shorts walking shorts hot shorts leggings shorts white jean shorts bikini workout pants vintage shorts tactical shorts

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ACTIVE FIT - Designed to follow the lines of the body, usually with some amount of stretch fabric. These garments have a lighter feeling fit, with less bulk than a relaxed fit thermal base layer. They are especially perfect for year round, multipurpose use under layers.

UPF 40+ - Ultraviolet Protection Factor. Sunlight includes rays of ultraviolet (UV) radiation, and Hot Chillys products are designed to help protect you!

WARMTH FACTOR 10/10 - Ranked from Mild to Hot, the Warmth Factor Thermometer tells you how warm each of our products is. Warmth Factors 6, 7, and 8 are considered Midweight and are very popular for most cold-weather activities.

79% Polyester, 21% Spandex:

Quick-drying:

Stretch knit fabric:

UV Protection - With UV protection of UPF50+

Sun Blocking, Lightweight, Breathable, Quick Dry

Lightweight - Easy to pack and go. Great for traveling

UV Protection - With UV protection of UPF50+

Sun Blocking, Lightweight, Breathable, Quick Dry

Lightweight - Easy to pack and go. Great for traveling

【Match】Active Base Layers/Active Hoodies/Active Pants/Active Shirts Tees/Button-Down Shirts/Polos/T-Shirts/Tank Tops/Active Shorts/Active Sweatshirts/Active Underwear/Athletic Socks/Base Layers Compression//Dresses/Casual/Club Night Out/Cocktail/Formal/Wedding Dresses/Work/Leggings/Sets/Skirts Skorts/Sweaters/Track Active Jackets/Vests/Bodysuits/Coats, Jackets & Vests/Dresses/Fashion Hoodies & Sweatshirts/Jeans/Jumpsuits, Rompers & Overalls

【Match】-Men's Activewear Collection is here for you whether you're running, training, stretching or relaxing. #Activewear Tops/Active Base Layers/Active Hoodies/Active Pants/Active Shirts Tees/Button-Down Shirts/Polos/T-Shirts/Tank Tops/Active Shorts/Active Sweatshirts/Athletic Socks/Base Layers Compression/Activewear Bottoms/Leggings/Sports Bras/Biker Shorts/Sets/Working Out /Yoga /Leggings/Hiking /Sweatsuit/Full-Length/7/8/Cropped Sweatpants/Shorts/Skorts

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Fit updated to improve functionality while enhancing aesthetics for a range of body shapes. Crew neck with raglan sleeves

SW016369

Flatlock seam construction designed to minimize chafing. Back body seam wraps to front for body-enhancing fit