SIZE CHART: SIZE 36: US SIZE 5; suitable for shoe length 240cm; SIZE 37-38:US SIZE 6; suitable for shoe length 250cm; SIZE 39: US SIZE 7; suitable for shoe length 255cm; SIZE 40-41:US SIZE 8; suitable for shoe length 260cm; SIZE 42:US SIZE 9; suitable for shoe length 265cm; SIZE 43-44:US SIZE 10; suitable for shoe length 270cm; SIZE 45:US SIZE 11; suitable for shoe length 275cm; SIZE 46-47:US SIZE 12; suitable for shoe length 280cm; SKIN-FRIENDLY 3MM NEOPRENE SHOES this neoprene diving socks made by 3mm qualitysofty neoprene with 4-way stretchy nylon laminated,which is healthy,elastic and durable,can last long even frequent use and protect your feet from cut,puncture,scratch and cold water. LOW CUT DESIGN WITH ADJUSTABLE STRAP AND ELASTIC LOOPLow cut design provide more flexible using experience.The adjustable strap can make the welt cover your ankle tightly, prevent sands or other small things coming in.The elastic loop on the heel part can be helpful for easily getting socks on and off.In addition,you can hang your socks on fins or wall easily with this loop. REINFORCED AND ANTI-SLIP SOLEReinforced and rubber printing sole,can be abrasion resistant,tearing resistant and anti-slip.When you ware this neoprene fin socks,you can walk on sandy,rugged or slippery environment without feeling dangerous or uncomfortable.