The Jack short from Sugoi is a classic compression short - great for yoga or a run. Made from a lightweight yet substantial nylon/spandex blend, its form-fitting design allows for complete freedom of movement. Technically excellent, it features zone construction (multiple fabric panels sewn together) for comfort and durability, with two mesh panels at the bottom back of each leg. Sugoi thought of everything - the Jack even has a back zip pocket with a breathable mesh panel, an inside key pocket, and two reflective Sugoi logos. (Sugoi is the Japanese word for incredible. )