WITH COLD WATER SESSIONS AND RUGGED COASTLINES IN MIND, WE SET OUT TO CREATE A SPLIT TOE BOOT TO MAXIMIZE DURABILITY, DEXTERITY AND WARMTH Our Cyclone Split Toe Boot features taped seams for maximum seal and our Hexo_Therm internal lining for extra warmth without restrictioin. A Resist panel at the heel and Dual texture sole adds grip and durability, while an arch strap keeps the boot secure and a pull tab ensures easy on and off. Thickness: 3/2mm OR 4/5mm Sealed seams Hexo_Therm internal lining Resist panel at heel Dual texture sole, Arch strap, Pull tab 60% Neoprene, 15% Nylon, 5% Polyester, 20% Rubber SHOE SIZE CONVERSION US US WOMEN'S UK EU CM 5 6.5 4 36 23.5 6 7.5 5 37 24.1 7 8.5 6 38-39 25.1 8 9.5 7 40-41 25.7 9 10.5 8 42 26.7 10 11.5 9 43-44 27.6 11 12.5 10 45-46 28.1 12 13.5 11 47 28.7 13 14.5 12 48 29.5 14 15.5 13 49 30.7 15 16.5 14 50 31.5