Yoga Sak the Ultimate Sport Bag/Multi Purpose Backpack. Fantastic for Yoga, Hiking, Biking, Travel, Gym, School/Office Spacious Room in Rear Compartment For A Yoga Block, Towel, Shoes etc. Built in Water Bottle Holder Made from A Custom 600D Twill Polyester I.D. Holder + Hidden Pocket Adjustable Shoulder Straps* YOGA MAT NOT INCLUDED