Both Dry Bags made with the highest quality waterproof and anti-tear ( 500D PVC ) Material. Both complete with roll-top desn allowing you easy top access which simply folds 2-4 times with a reinforced strip to ensure airtight seal. Both Bags are fitted with an exterior splash proof pocket for quick and easy access of keys, cellphone, wallet etc. The 30L Dry Bag is completely air travel friendly, fitting comfortably in the overhead compartment and complete with D-Rings to both shoulder straps and a MOLLE looping system providing anchor points to latch onto while boating or biking. Built for comfort – constructed with an ergonomic padded back panel, reinforced, contoured shoulder straps and a low profile sternum strap providing ultimate comfort by taking the weight off your back. The 10L is complete with a single shoulder strap which can be used over the shoulder or crossed over the chest - allowing for easy, light, and comfortable carrying also complete with D-Rings allowing connection to backpack and other adventure accessories.