Large bag: 9.5 in. x 12.75 in. Medium bag: 7.5 in. x 10.75 in. Small bag: 5.5 in. x 8.75 in. Small & medium bags: nylon Large bag: clear vinyl Zipper pouches All pouches can nest inside each pouch Includes 2 'privacy' pouches for phone, money, undergarments, book, etc. Larger vinyl pouch is waterproof for a wet bathing suit! Bags can clip together with carabiner (included)