Welcome to Altra Running Footwear

hydro/dry Flex

This stretch fabric offers increased freedom of movement during activity and has a minimum performance of 20,000mm hydrostatic head and 20,000g/m2/24hrs MVTR.

All Hydro/Dry® fabrics are manufactured to give you, the wearer, the very best in waterproof, breathable and windproof technology. Hydro/Dry® keeps you dry, warm and comfortable whatever your adventure.

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