"July bills itself as having the lightest carry-on in the world, and it is in fact the lightest our team has found at just under four pounds when empty. Tested by research director Alexandra Sanidad, the bag “can fit a week’s worth of clothing if you pack lightly, or a weekend’s worth if you’re bringing multiple day and night outfits.” It has two evenly-sized compartments inside, and is very easy to roll and navigate around obstacles on the ground like puddles and trash, Sanidad says. Order it in one of six classic colors or two limited-edition colors, and know that you can personalize it with your initials, or your pet's face (yep, you read that right). $245 at July"