- Repreve traceable recycled 4 -way stretch fabric - Dryflight water repellent hrdrophobic treatment - Set in repreve traceable, recycled 4-way stretch heather polyester made from plastic bottles, with a DryFlight water-repellent hydrophobic coating, and rounded out with a 19" outseam for an on the knee length, these amphibian board shorts for men join the line-up in the Quiksilver spring/summer shorts collection.