Compression packing cubes from COR Surf, now with YKK zippers. Pack more into a carry-on and skip checked-bag fees.
The cubes open up to 3.5" thick, or zip the compression zipper to squeeze them down to about 2" thick. They fit neatly in the Island Hopper Travel Backpack.
Sizes
Medium compression cube: 10.5" x 7.5"
Large compression cube: 15" x 10"
Laundry/shoe bag: 17" x 12.5"
Packs
3-Pack: 1 large cube, 1 small cube, 1 laundry/shoe bag
5-Pack: 2 large cubes, 2 small cubes, 1 laundry/shoe bag
6-Pack: 2 large cubes, 2 small cubes, 1 laundry/shoe bag and 1 non-compressing rectangular cube (good for socks, underwear and electronics)