100% nylon; Lining: 100% polyester; Converts into a backpack or crossbody (with a removable strap); 15 in. padded laptop pocket, yoga mat compartment, and removable shoe bag; Exterior zippered phone pocket, two open side pockets for water bottles, and an interior keychain; Lined interior has zippered pockets for small items; Front pocket can be embroidered / screened; Yoga mat not included; 13.25" L x 7" W