A sturdy outsole and rubberized armor provide excellent protection on both the top and bottom of the boot.nThe top of the foot is both cushioned and protected against abrasion from the edge of the fin pocket.nBuilt-in arch support increases comfort when traversing rocky shorelines.nThe long zipper is great for easy donning and doffing and is fitted with a gusset to cut down on water seepage.nFor detailed size information, please refer to Scubapro Boot/Sock Sizing Guide.n5mm thickness for temprate water diving.Rubber sole for added comfort and traction.Zipper and inner gusset for easy on and off.Toe and heel caps and fin retainer.Rugged 5mm NonSkid SoleGusseted ZipperFor temperate conditionsThickness: 5mmSole: Rubber sole for added comfort and traction.Toe and heel caps: YesFin retainer: YesZipper: Gusseted Zipper