Pack more than you think is possible. Each packing cube uses a zippered compression system to condense your clothes and maximize your space by 50 percent. 5.5"-3.5" Compression Durable Materials Lightweight Materials See Through Mesh Small - 7.75" L x 7.75" W Capacity: 4L (compressed to 1.5L) -> Perfect for packing socks and underwear Medium - 11.5" L x 7.75" W Capacity: 5.5L (compressed to 2.5L) -> Perfect for packing T shirts and shorts Large - Large Cube: 11.5" L x 11.5" W Capacity: 10L (compressed to 5L) -> Perfect for packing Jeans and Sweats