The Hybrid Training Short has a more relaxed fit, longer outseam, and external pockets for use in the gym and outside of it also. Ultra-durable STR-X fabric developed to provide the technical needs that are essential to MMA and training: durability, exceptional 4-way stretch, breathability, moisture wicking and comfort. Patent-pending compression waist-tightening system that can be tightened without creating "scrunching or cinching" around the waist while providing a comfortable, no-slip fit. External pockets with hook and loop closures keep your phone, music, or gym card close at hand. 90% Polyester & 10% Spandex. Care:Machine wash coldTumble dry lowDo not bleachDo not iron