The Patagonia Strider Pro 5" Short - Men's is a running short for long trail runs. Mountains, desert, woods, whatever the trail looks like, when the weather is hot, this technical short is ready to perform. The fabric is 90% recycled polyester, with 10% spandex so they dry fast and stretch easy. Equipped with four envelope-style pockets and one zippered, there is plenty of space to stash energy gels, keys, and anything else needed on the trail.