A streamlined hiking backpack daypack designed for your outdoor adventures and daily commutes.Heading out for a full day of exploring often means looking for a balance between capacity and weight. A bulky bag adds unnecessary weight on steep trails or crowded city streets.Why is this hiking backpack daypack a popular choice? Travel friendly: The compact dimensions provide a suitable carry-on option that fits beneath an airplane seat. Hydration ready: An internal sleeve holds a 0.53 gal water bladder for convenient access to your drinks. Weather resilient: The tear-resistant, water-repellent exterior fabric manages light rain during sudden showers. Accessible organization: Multiple external pockets and attachment loops offer quick access to your water bottles and trekking poles. Specifications Material: Ripstop nylon Volume: 4 gal Weight: 14 oz Dimensions: 18 x 9.4 x 3.9 in Hydration compatibility: Fits 0.53 gal bladder Colors: Green, Pink, Purple, Gray, Black Closure type: Zippered compartments Water resistance: Water-repellent finish Strap style: Wide and adjustable