FLEXIBILITY: KEEN.BELLOWS FLEX is a proprietary technology that features built in flex to allow bending where other boots crack and weaken over time PUDDLE HAPPY: KEEN.DRY waterproof, breathable membrane to keep your kids’ feet dry and comfortable while jumping in puddles and walking in mud WARMTH: KEEN.WARM 400G insulation helps keep your kids’ feet warm in temperatures down to -40° F / -40° C, but still offers breathability TRACTION: Multi-direction lugs provide optimal grip for sure footing in the most rugged terrain; Non-marking rubber outsoles leave no trace or imprints while indoors CARE: Gently brush with a soft, damp sponge to remove loose dirt; Treat stains right away with a gentle cleaner; Air dry away from heat