WATERPROOF - Solid straps bear the weight more than 45 pounds, no need to worry any ripping or break during trips. Made of waterproof fabric to protect your gears well from rain or wet.SAVE YOUR CARRY ON CHARGES -Bag size 18 x 13 x 6.3 inch fits personal item size 18 x 14 x 8 inch of Spirit Airlines & Frontier Airlines, which can be placed under seat and no need to pay carry-on.PACKABLE & LIGHTWEIGHT - Folding up when not use. Capacity 25L yet only 7.2 ounce offer the same packing space as a small suitcase - minus the weight and bulkiness.EASY CARRYING - Its external storage pocket offers quick access to small items. The pouch as a strap enables the duffel to fit over the handle of common suitcase 18 20 24 26 28 32 inch for easy carrying.VERSATILE - Easily held all your gym or travel items.