Puma Kids - Speed Cat Crib (Infant) (Little Boy Blue/White/Prism Pink) - Kids' Shoes: Hip and sleek crib shoe for girls. Synthetic suede upper. Rubber designs on bottom for traction. Soft materials makes this product a fantastic and comfortable crib shoe. Each shoe comes with a removable insole that is marked, and meant to be taken out for easy measuring, to ensure a proper fit.