NRS Hydroskin Socks pack cover but insulation would make you

but insulation would make you overheat

while small enough to fit in your jacket pocket

the award-winning Arc Haul will allow you to tackle those long days on the trail with a durable ultralight backpack designed to fit you

Also available in a women's version here

NRS Hydroskin Socks pack cover but insulation would make youNRS HydroSkin Socks are the ultimate liner for hiking through snow, streams or other wet and cold conditions. They are thin enough to easily slip into your boots, trail runners, or sandals. The neoprene core insulates and protects your feet even when wet, and the 4 way stretch PowerSpan outer layer gives you enhanced mobility and greater durability. Keep your fingers warm when wet too with NRS HydroSkin Gloves. AVAILABLE TO CUSTOMERS IN THE UNITED