SmartWool Hike Classic Edition Light Cushion Crew Socks Size:Medium MSR® SuperFuel is the highest-performance

MSR® SuperFuel is the highest-performance white gas on the market

and the new svelte 3-in-1 cap lets you fill

for maximum results with minimal effort

yet 'breathes' for absolute comfort

Fabric made with 85% recycled polyester

SmartWool Hike Classic Edition Light Cushion Crew Socks Size:Medium MSR® SuperFuel is the highest-performanceOver 25 years ago, we invented the original Merino wool performance sockthe Classic Hike. The Classic Hike remains mostly unchanged and certainly unmatched in comfort. But today, its getting upgraded. And that upgrade starts with recycled nyloncreating a more sustainable (but just as comfortable) sock. Theyre also made with responsibly sourced, ZQ certified wool that was grown with a focus on ensuring environmental, social, and economic sustainability