These Boots Run true to size to wide fit. A zipper has been added so children can easily slip on the boot. 100% ecological, 100% vegetable tanned, 100% biodegradable and 100% chrome-free leather & insole lining. Soles are made of lightweight recycled TR rubber. The leather welts are made out of 100% vegetable-tanned leather and the zipper tape is made from recycled PET bottles