Trekmates Torridon Sleeves made of three-layer material and with a DRY membrane, they are waterproof, breathable and protect against rain, snow, stones and dirt. The ankles and the front band are reinforced with Cordura, which increases their resistance and durability. The upper part of the sleeve is made of durable nylon Taslan. Easy handling - opening is from the front with a zip + velcro. Download above. Tight strap under the shoe. The DRY membrane is a waterproof and breathable membrane from Hipora, which excels in its excellent water resistance while maintaining good breathability.