Vinqliq 30L Lightweight Folding Packable Travel Backpack Daypack Durable Water Resistant for Camping, Hiking, Cycling, Backpacking DURABLE AND WEATHER RESISTANT - Made with high quality waterproof and tear resistant nylon fabric, provides extra strength and long-lasting performance with the lightest weight possible. Heavy duty two-way YKK metal zippers across the backpack are convenient to operation on whichever side you prefer. Longevity is further enhanced by bar-tacks at major stress points. PACKABLE AND COMPACT - Folds into zipped inner pocket with only 8.5 X 8 to fit anywhere, also easy to carry, and unfolds from pocket to backpack in seconds. A must have for every trip. LIGHTWEIGHT(8.8 oz) and ROOMY(30 Liters) - A true space saver. Stuff the bag into its own pocket for storage---no extra fees, and unzip it when you reach your destination. Avoid overweight charges, simply unfold from your luggage and use it as a carry on for your excess baggage. MULTI COMPARTMENTS - Features a classic shape with several pockets for storage and organization. This backpack has a roomy main compartment, two front zipper pockets to hold small accessories, and two side pockets for water bottle or umbrella. COMFORTABLE. Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. The length of the shoulder straps is adjustable.