Porelle Dry is a waterproof and breathable microporous polyurethane membrane that is: light, flexible and durable. The key feature of the Porelle Dry film technology is its dry feel when used in active apparel applications. Porelle Dry films are produced by a unique novel coating process which enables the formation of a uniform micro-structure. This ensures consistent waterproofness levels even after multiple washes.

They breathe by absorbing and dissipating sweat through the diffusion of water vapour molecules across the solid structure. Porelle Dry is a microporous membrane that breathes by a different mechanism, which allows the character and nature of the film to still feel dry when in use. The membrane is hydrophobic and repels water droplets, even under high pressure.