Features/Benefits: sized for kids ages 5-8 (kids shoe 11-4). Silicone patterned grip provides a non-slip surface anytime, anywhere. Full-toe coverage allows for better tactile feel and balance. Use with or without a mat to increase balance and stability. Materials: 81% cotton, 11% Nylon, 5% Polyester, 2% Rubber, 1% Spandex.