The Nano Puff® collection is Patagonia's answer to every "but what if it gets cold?" moment, delivering packable warmth that's ready for everything from unexpected summit chills to that daily commute cold snap. Stuffed with synthetic PrimaLoft® Gold Insulation Eco (made from 100% recycled content), these pieces keep bringing the heat even when wet - a game-changer when Mother Nature throws a curveball. The collection spans from full-zip jackets to vests and pullovers, each rocking a recycled ripstop shell that blocks wind and sheds light precip while packing down smaller than your morning bagel. Whether you're using it as a midlayer for storm days, an outer piece for crisp belays, or just your go-to jacket for everyday missions, the Nano Puff's warmth-to-weight ratio and do-it-all versatility have earned it legend status in the insulation game.