Backpackers often like to roll one up, but in the case of Portland's Rollnband, that's because these bewilderingly simple aids can turn anyone into an efficient, space-saving packer without, like, hard work and stuff.
Sick of having his elastic bands snap and generally suck at doing what he wanted them to, the dude behind Rollnbands makes them out of non-roll woven elastic, "which helps prevent the band from twisting in on itself".
The large version clocks in at 10.5in, while the small one is 9in, your protestations that 9in isn't small notwithstanding.
Simply wrap a band around your rolled clothes and you might save enough space to prevent yourself from having to check a bag, money you'll probably just spend on more Rollnbands, you addict.
The silicon labels are color-coded to "help in separating clean from dirty clothes", assuming the color of the clothes themselves doesn't immediately tip you off.
Beyond wearables, you can use 'em to roll up sleeping mats, blankets, and even tents.
And because of their virtually snap-proof design, you can also use them to rig stuff up to your bike, useful for travelers who like to roll out, too.