Arcteryx Atom Vest Arcteryx Proton SL Hoody and promotes a smooth

and promotes a smooth

The outer fabric is a soft and lightweight Ripstop Nylon which allows good breathability

minimal weight

Bungee compresion

Lace hooks affixes pant to boot

Arcteryx Atom Vest Arcteryx Proton SL Hoody and promotes a smoothThe Arcteryx Atom Vest provides core warmth and can be worn either as a mid or outer layer depending on the conditions and activity. When used as an outerlayer and the weather takes a turn for the worst then a shell jacket over the top will be a perfect, albeit a very warm combination. The Atom Vest uses Coreloft Compact 60 insulation, a lightweight synthetic insulation that is very compressible and light but expands very quickly when unpacked.