KEEN Kids Targhee mid waterproof hiking boots are for little kids who need the support and performance of our award-winning Targhee boots to keep up with their parents on family hikes and camping trips! KEEN.Dry A proprietary waterproof, breathable membrane that lets vapor out without letting water in. KEEN.DRY waterproof, beathable membrane Secure-fit lace-capture system Adjustable hook-and-loop strap Padded tongue and collar for comfort TPU heel-capture system for stability Cleansport NXT for natural odor control PFC-free durable water repellent Waterproof leather and textile upper Non-marking rubber outsole leaves no trace Breathable mesh lining Removable EVA footbed In order to get at least a season of use for your quickly sprouting youngster, measure the length of their foot, then add 1.5 cm to 2 cm to find the right size. For example, if your child's foot measures 16cm, then a size 11 (18cm) should provide enough room for the average growth over about 3-4 months. See all Keen footwear here.