Seirus Heatwave Sock Liner Color:Black verifiable REPREVE® polyester yarn by

verifiable REPREVE® polyester yarn by Unifi® supports your foot and stands up to abuse

This smaller

BDry waterproof and breathable membrane keeps feet dry

Its hybrid shell design adds durability without weighing you down

Comfortable Elastic Waist

Seirus Heatwave Sock Liner Color:Black verifiable REPREVE® polyester yarn byThe exclusive Heatwave thermodynamic lining as a comfotable, 4 way stretch sock lets you increase the heat of any footwear Flat seam, form fitting construction Reinforced stitching for lasting strengthMens Shoe Size: S( 6) M(8 8. 5) L(9 11. 5) XL(11. 5 13)Womens Shoe Size: S( 7) M(7 9) L(9. 5 12)