Bogs Rue Waterproof Slip-On Shoe (Little Kid) 100% Rubber Rubber sole Heel measures approximately 0.5" 100% Waterproof -- Super Cute Seamless construction for comfort 2mm SBR/CR + 2mm Ventilated airmesh lining Natural hand-lasted rubber and a four-way stretch inner bootie Contoured EVA insole with Aegis antimicrobial protection