The Bical Grippers are definitely a must have shoe for babies, toddlers, and preschoolers. Used as an indoor or outdoor shoe, the bical shoes are fun, flexible and functional. Awesome as a water shoe at the beach, water-park or pool. Grippers easily transition to land to be worn as a fashion sock or shoe. Indoors? No problem - no more slipping on hardwood or tile floors and perfect at daycare or preschool as kids can pull them on and off by themselves. Bical Grippers promote healthy foot development of growing feet, while also providing the freedom of movement, traction and protection that exploring tots require. Bical Grippers are also a wonderful compliment or alternative to soft soled leather crib shoes in addition to just being a really cool sock/shoe or slipper. They have been a great seller in both Canada and the US. Grippers Uses: Indoors and outdoors Hardwood and tile floors Daycare and playschool Water-park Beach Pool. Features and Benefits: Removable anti-microbial insole Knit breathable upper 80% Polyester, 17% Cotton, 3% Elastane Non-slip, flexible, TPR sole Lightweight Non-toxic. Sizing: Size 4 (4.5 inches, 9-12M); Size 5 (4.75 inches, 12-18M); Size 6 (5 inches, 18-24M)