OS1st Thin Air Performance Socks in Steel Blue Size:L The lower layer is an

The lower layer is an EVA foam cushioning cover for maximum comfort

formula is never wet or greasy

Arch:  Semi-rigid polypropylene support shell

updated Altra EGO™ MAX midsole foam

OS1st Thin Air Performance Socks in Steel Blue Size:L The lower layer is anMade for those who prefer a thinner sock that protects from blisters and keeps feet dry. Our Skin Thin top panel helps regulate temperature and circulate air throughout the sock. For the best fit, it is important to use the size chart before ordering. Ultra thin top panel to promote temperature regulation Woven lift bars to circulate air throughout the sock Targeted Conditions: Blisters Sore achy feet Hyper sensitivity Overheating Skin Thin Design