Redtag Childrens Big Girls Striped Extreme Thermal Socks With Grippers (2.45 Tog) Acrylic, Polyester, Elastane Kids striped thermal socks with foot grippers and 2.45 tog. Soft brushed inner to hold more warm air close to skin, keeping feet warmer for longer. Advanced insulating yarn for high performance insulation. Choice of 3 colors. Choice of 3 sizes.