Our most compressible storm shell is so light it practically floats, or at least it's so light that you won't notice you're carrying it until a sudden downpour bursts into your day. When a big, exposed objective puts you on route for a full day stretching into dark, this jacket packs into its own pocket and can be clipped to your harness for quick access if you need protection from rain, wind, or cooling temps.

This ultralight and waterproof day sack has all the features needed for a fast and light summit push. Radio frequency welded seams and reinforced fabric on the bottom and pocket area provide maximum strength and waterproofness.