Two medium cubes hold 7 days of summer outfits, bathing suits, pj's. 1 Small cube holds 4 boxers, 3 basketball shorts, and 3 crew socks. Toiletries bag is large and roomy. Tsa 311 bag holds 4 3.4oz bottles, lotion, 3 oz toothpaste tube, small perfume, 2 mascara tubes, with a little room left. Two medium cubes fill one side of a 21in carry-on with no room left. The otherside of the carry-on held the shoe bag, toiletries bag, small cube with a lot of room for last minute items. zippers stick and ISee full review