Immersion Research Men’s Penstock Shorts

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Versatile shorts designed for everyday use

The Men's Penstock Hybrid Board Shorts are stretchy, functional shorts that excel on and off the water. Made using lightweight, fast-drying polyester, the Penstock Shorts offer a slim but comfortable fit. A zip fly and lace closure make a secure fit at the waist. Spacious front pockets with mesh drains offer enough space for cell phones, keys, and other essentials while allowing water to quickly flow through rather than billowing up. A rear zipper pocket offers storage for your wallet. Casual, comfy, and capable, the Penstock Men's Shorts will quickly become your favorite shorts. 


  • Packaged in a Reusable Lunch Bag made from scrap fabric
  • 4-way stretch wicking polyester fabric
  • Zip fly for relief 
  • Front pockets with mesh drain
  • Rear zip pocket with mesh drain
  • Available sizes (28-40 even, 33)


  • Fabric - 91% Polyester, 9% Spandex
  • Fabric Weight - 195 g/m²
  • Country of Origin - Thailand