Review on Lightweight Waterproof Hiking Backpack - Ideal For Climbing, Camping, And Touring - Outdoor Sport Daypack And Travel Bag With 50L Capacity by William Byrd

This is a perfect size for carry one luggage. I got this to hold a specific size fin for scuba, works great. Has extra pockets which worked well to keep liquids (soap, shampoo, lotions) separate from other items. This really worked out well for our weeklong sailing trip in the warmer waters. But caution, do not over stuff it and keep heavier items at the bottom for balance.