Marmot MemBrain® is entirely waterproof, and knocks down chills by allowing internal moisture to escape. The marriage of stretchable fabric with plush, high-loft fleece makes for unheard-of comfort. It
MemBrain® fabric balances the best performance in waterproof, breathable fabric with excellent durability.
MemBrain® reduces internal condensation while increasing comfort by reducing the chilling effect caused by condensation build-up.
When used with insulated garments or sleeping bags, MemBrain® protects the insulation from harsh weather conditions.