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 perfectly, 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.