Waterproof backpacks can be submerged underwater without letting any water in. However, these waterproof bags, or dry bags, use a roll-top closure that makes packing and unpacking difficult. Dry bags are best used for electronics and other valuables when you're on the water. For dealing with rainy weather, a water-resistant backpack provides a better balance of weather-resistance with usability. The front-loading, suitcase-style opening gives you better access and organization while traveling.

No, most travel backpacks use durable, water-repellent (DWR) coatings that can repel water but will wear off over time. Tortuga uses waterproof sailcloth and PU-coated zippers so that the weather-resistance is built right in, not added later. These are expensive investments but worthwhile if you're traveling in rainy weather while carrying all your clothes and a computer. Travel + Leisure tested Tortuga through "stormy rain and even dropped it in the mud, and it kept all items protected and dry."

For travel, extreme water resistance is better than full waterproofing. Truly waterproof dry bags open from the top, like hiking bags, forcing you to pack and unpack everything every time you open your bag. Tortuga's waterproof sailcloth and PU-coated zippers provide superior weather protection while maintaining the front-loading organization that makes travel backpacks better than suitcases or hiking packs.

High-quality, waterproof materials are worth the investment for frequent travelers who have to deal with every type of weather. Tortuga's waterproof sailcloth and PU-coated zippers cost more than basic DWR coatings but provide reliable protection that doesn't degrade over time, keeping your belongings dry in any weather.

Yes, waterproof travel backpacks can be taken on planes if they meet carry on size requirements. Tortuga waterproof travel backpacks measure 22 × 14 × 8 inches, fitting within carry on limits while providing superior weather protection with waterproof sailcloth and PU-coated zippers.