The Strafe Aero Men's Insulator is an ultra-lightweight technically advanced insulator designed as a layering piece for four season use. PrimaLoft® Gold insulation with Cross-Core™ infuses NASA-developed aerogel particles (composed of 95% air) into the fibers, providing an exceptional insulation barrier and warmth to weight ratio in a piece that won’t wear out and packs up pocket sized in your pack. Strategic pocket placement means you can access your pockets whether or not you’re wearing a pack, and the raglan sleeves are pack compatible for a comfortable, chafe-free fit. There is even a mesh electronics sleeve in the right hand pocket and a zippered interior card pocket. It’s an impressive piece that will live year around in your pack, the winter midlayer, the spring warmer, the piece to take the chill off the summit this summer. Lightweight with space-age synthetics this is a “don’t leave home without it” piece you don’t have to worry about becoming a problem in a shower. Easy care, quick dry, it’s the addition to your gear kit you’ve been looking for.