Chilly mornings in basecamp, simulclimbing by headlamp, and cragging in the Creek before spring has sprung all give the Nano Puff® Vest its raison d'être. The latest of the Nano Puff lineage - here by demand from customers and ambassadors alike - keeps the tradition alive with superb compressibility, featherlight weight and surprising warmth. Worn as an outer or midlayer, the vest features a premium PrimaLoft® One (60-g) insulation that traps heat and a 100% recycled polyester ripstop shell with a Deluge® DWR (durable water repellent) finish that stops the wind and sheds moisture. Finer points include a drawcord hem, two zippered handwarmer pockets and an internal chest pocket (with clip-in loop) into which the vest stuffs.