Everything works better with a little bit of stretch. Our Billy Goat offers you the sturdy good looks of canvas, with just the right amount of give for added comfort and mobility. 97% cotton, 3% spandex. Articulated knees and reinforced patch at back of heel, garment washed, jean style pocketing with drop-in cell phone pocket, tonal stitching details, full length running gusset. Material: Cotton, Spandex.