The new FlashBomb boot is redesigned to increase warmth without adding extra weight. E4 flash lining with E4 flash lining tape keep your feet toasty warm while remaining lightweight. A stitchless compression strap, velcro shaft closure, and a super thin sole provide structure and durability without bulk. We added an anti-stink treatment to reduce odor caused by bacteria. A warm surf bootie with an amazing feel for your surfboard, flashbomb lining dries fast and makes them easier to get on. 3mm w/ Flash Lining E4 Flash Lining E4 Flash Lining Tape Anti Bacterial Treatment .8 Mm Super Thin Sole Stitchless Compression Strap Women's Wetsuit Boots Size Length of Inner Sole 3 17.5 4 18.5 5 19.5 6 20.8 7 21.8 8 22.8 9 23.8 10 24.8 11 25.8 Please note sizing information is listed in centimetres.