The large matsak is made of a durable cotton canvas material with recycled PET mesh detailing * Two zippered compartments provide protective carrying space for a yoga mat, towel, strap, and personal items * Cork is renewable, sustainable material which has a firmness not found in foam blocks * With its denser, thicker form, unparalleled comfort and cushioning * Includes breathable yoga mat and damp article compartments, full-length zipper, padded shoulder strap