"The Patagonia Black Hole 6L Cube keeps a carry-on from becoming a search operation, sized right for toiletries, chargers, and the small items that otherwise scatter. The postconsumer recycled polyester ripstop body holds its shape under compression, and the TPU-film laminate keeps the exterior from absorbing whatever it sits next to in a bag. What Our Gearhead® Experts Are Saying:""I toss this into every bag I pack because it keeps small items from migrating to the bottom. The interior divider panels separate what I need at the hotel from what stays buried until I'm home."""