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![[EXP-A] Men's Bamboo Underwear Boxers in all black - Model:Skyler](http://uk.stepone.life/cdn/shop/files/240515_S1_1_MENS_0031.jpg?v=1746144020&width=1200)
![[EXP-A] Dark Grey Men's Underwear with Fly at Step One - Model:Angus](http://uk.stepone.life/cdn/shop/files/240521_S1_1_MENS_0215.jpg?v=1718696889&width=1200)
![[EXP-A] Trunk - Black Currants - Bamboo Underwear - Model:Vince](http://uk.stepone.life/cdn/shop/files/240520_S1_1_MENS_0090.jpg?v=1746144286&width=1200)
![[EXP-A] Men's Bamboo Underwear Sport Boxers in grey - Model:Skyler](http://uk.stepone.life/cdn/shop/files/240515_S1_1_MENS_0129_1.jpg?v=1717034850&width=1200)
![[EXP-A] Men's Bamboo Underwear Boxers in Green - Model:Skyler](http://uk.stepone.life/cdn/shop/files/240515_S1_1_MENS_0082.jpg?v=1757651530&width=1200)
![[EXP-A] Trunk - Ahoy Sailor - Bamboo Underwear - Model:Vince](http://uk.stepone.life/cdn/shop/files/240520_S1_1_MENS_0527.jpg?v=1746144286&width=1200)
![[EXP-A] Blue Underwear with Fly at Step One - Model:Angus](http://uk.stepone.life/cdn/shop/files/240521_S1_1_MENS_0094.jpg?v=1718624842&width=1200)
![[EXP-A] Boxer Brief - Butter Nuts - Bamboo Underwear - Model:Angus](http://uk.stepone.life/cdn/shop/files/240521_S1_1_MENS_0771.jpg?v=1757651530&width=1200)
![[EXP-A] Women's SmoothFit Thong - Espresso-Tini - Bamboo Underwear - Model:Elke](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_1181.jpg?v=1717594561&width=1200)
![[EXP-A] Women's Underwear Body Short in Black - Model:Yolanda](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_0332.jpg?v=1717034909&width=1200)
![[EXP-A] Women's SmoothFit Padded Bra - Espresso-Tini - Bamboo Underwear - Model:Holly](http://uk.stepone.life/cdn/shop/files/240906_S1_SBRA-S-10063-1_SFUB-S-B_0085.jpg?v=1726015357&width=1200)
![[EXP-A] Espresso-Tini - Bamboo- Model:Elke](http://uk.stepone.life/cdn/shop/files/240521_S1_2_WOMANS_1414.jpg?v=1717594605&width=1200)
![[EXP-A] Women's SmoothFit Thong - Blue Lagoon - Bamboo Underwear - Model:Elke](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_1534.jpg?v=1717236815&width=1200)
![[EXP-A] Women's SmoothFit Full Brief - Rosé All Day - Bamboo Underwear - Model:Elke](http://uk.stepone.life/cdn/shop/files/240521_S1_2_WOMANS_1106.jpg?v=1717594593&width=1200)
![[EXP-A] Women's Body Shorts - Blush - Bamboo Underwear - Model:Yolanda](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_0424.jpg?v=1717050896&width=1200)
![[EXP-A] Women's SmoothFit Bikini Brief - Espresso-Tini - Bamboo Underwear - Model:Elke](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_0905.jpg?v=1717504601&width=1200)
![[EXP-A] Women's Body Shorts - Butter Scotch - Bamboo Underwear - Model:Yolanda](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_0705.jpg?v=1717236873&width=1200)
![[EXP-A] Women's Bikini Brief - Butter Scotch - Bamboo Underwear - Model:Yolanda](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_1065.jpg?v=1717236866&width=1200)
![[EXP-A] Women's Underwear Body Short in White - Model:Yolanda](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_0357.jpg?v=1717050892&width=1200)
![[EXP-A] Women's Bikini Brief - Tap Shoe - Bamboo Underwear - Model:Yolanda](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_1030_c0479f30-9f8b-44a6-b1ea-7f4d03b10a92.jpg?v=1718181143&width=1200)
No - cotton undies aren't good! Our men’s underwear and women’s underwear are made from viscose derived from bamboo - a fabric that’s breathable, super soft, moisture-wicking, and surprisingly durable. Oh, and it’s environmentally friendly too.
Finding the right fit is easy. Just head to our size guide for all the details. If you’re between sizes, we suggest sizing up for extra comfort. You can also browse our men’s underwear or women’s underwear collections to see how each style fits before you choose.
Yes, we’ve got you covered with our First Pair Guarantee. If you don’t love your first pair, we’ll refund you - no questions asked.
