Geox JR Savage ABX Waterproof Short Boot (Toddler/Little Kid/Big Kid) 100% Textile and Leather Synthetic sole Shaft measures approximately 3.5" from arch GEOX breathes sole technology combines breathability with a waterproof membraine Perforated sole allows air to flow into the shoe with each step while the waterproof membrane allows perspiration to flow out of the shoe but doesn't allow water to seep in from underfoot. Adjustable double strap Amphibiox technology provides a waterproof layer that is adheased instead of glued into the shoe so that the foot can breath