The Samaya U/D STUFF SACK is an ultralight, tough stuff sack. Minimalist and easy to use, it keeps your pack perfectly organized (spare clothes, food, etc.). Made from Dyneema® Composite Fabric with a waterproof base, it becomes waterproof when hung upside down. Clipped to your harness in a gully or on an ice climb, it keeps your mittens or belay jacket safe from spindrift and moisture. Keep your essentials dry and within reach!

U/D stands for "upside down".