Under armour mens storm groove hybrid vest stealth greyspring weightua storm gear uses a dwr finish to repel water without sacrificing breathabilityincredibly durable lightweight ripstop body fabric60g primaloftreg insulation is light breathable amp can be compressed without losing warmthhollow fibre side panels stretch amp trap superior warmthmesh lining for greater breathabilityhand pockets amp left side hidden zippered pocketelastic on hem amp armholespolyester