Functional Underwear
A revolution in underwear design, Functional Underwear is engineered to be smooth and comfy. Our patented waistbands are designed not to ride up, the cotton fabric is allergen free, and the seamless silk liner keeps you feeling fresh. Functional Underwear is all your underwear needs to be.
![CRAFT Kuft green label comfortable active sports and leisure functional underwear close-fitting layer warm breathable quick-drying perspiration [22 styles] turmeric black suit S](http://img14.360buyimg.com/pop/s220x220_jfs/t1/223762/39/24700/65508/64722947F542237a1/9a522eff19b3894f.jpg.webp "CRAFT Kuft green label comfortable active sports and leisure functional underwear close-fitting layer warm breathable quick-drying perspiration [22 styles] turmeric black suit S")
![CRAFT Kuft women's green label comfortable Active functional underwear close-fitting layer warm breathable sweat-wicking long-sleeved trousers [22 styles] mint green long-sleeved S](http://img14.360buyimg.com/pop/s220x220_jfs/t1/127752/13/32487/105485/64722957F016cf3e4/2b04ff90e6b32574.png.webp "CRAFT Kuft women's green label comfortable Active functional underwear close-fitting layer warm breathable sweat-wicking long-sleeved trousers [22 styles] mint green long-sleeved S")
![CRAFT Kuft women's green label comfortable Active functional underwear close-fitting layer warm breathable sweat-wicking long-sleeved trousers [22 models] wave blue long-sleeved S](http://img14.360buyimg.com/pop/s220x220_jfs/t1/105875/13/26378/109941/64722952F7457f117/919a517217b0285b.png.webp "CRAFT Kuft women's green label comfortable Active functional underwear close-fitting layer warm breathable sweat-wicking long-sleeved trousers [22 models] wave blue long-sleeved S")
![CRAFT Quaft red label functional underwear winter running fitness mountaineering skiing outdoor sports bottoming layer [22 styles] black men's S](http://img14.360buyimg.com/pop/s220x220_jfs/t1/109040/6/40396/55783/64722942Fd0017ea3/6db606685ca8523b.jpg.webp "CRAFT Quaft red label functional underwear winter running fitness mountaineering skiing outdoor sports bottoming layer [22 styles] black men's S")
![XBIONIC brand new 4.0 excellent energy speed running men's sports shorts moisture-wicking function underwear running outdoor X-BIONIC [shorts] teal blue/kaku orange M](http://img14.360buyimg.com/pop/s220x220_jfs/t1/114085/13/36496/113118/6476b7b6F79aa0e4b/752c9c981d0dea81.jpg.webp "XBIONIC brand new 4.0 excellent energy speed running men's sports shorts moisture-wicking function underwear running outdoor X-BIONIC [shorts] teal blue/kaku orange M")
![XBIONIC Silver Fox Heat Reflective RADIACTOR4.0 Men's Sports Mountaineering Cycling Ski Functional Underwear X-BIONIC [Limited] Top: Anthracite Gray/Silver S](http://img14.360buyimg.com/pop/s220x220_jfs/t1/123129/13/34064/175671/6474575bF555a708b/09bfb6bc4569de7e.png.webp "XBIONIC Silver Fox Heat Reflective RADIACTOR4.0 Men's Sports Mountaineering Cycling Ski Functional Underwear X-BIONIC [Limited] Top: Anthracite Gray/Silver S")
![XBIONIC Silver Fox Heat Reflective RADIACTOR4.0 Men's Sports Mountaineering Cycling Ski Functional Underwear X-BIONIC [Limited] Trousers: Anthracite Gray/Silver S](http://img14.360buyimg.com/pop/s220x220_jfs/t1/109250/14/39955/73701/6474575bF7f9ac086/0091f01b36f7227e.jpg.webp "XBIONIC Silver Fox Heat Reflective RADIACTOR4.0 Men's Sports Mountaineering Cycling Ski Functional Underwear X-BIONIC [Limited] Trousers: Anthracite Gray/Silver S")
