🎒 Stay Hydrated on the Go with RUPUMPACK Insulated Hydration Backpack - Ideal for Hiking, Running, Cycling, Camping, and Commuting - BPA Free Bladder Included - Lightweight and Versatile - 18L Capacity - Suitable for Men, Women, and Kids Review

100% Nylon. PERFECT DAYPACK INCLUDING 2.5L BLADDER : This large capacity daypack with hydration insulation layer weights only 1.4 pounds (650g) unfilled which makes it a terrific companion for all your day-long outdoor adventures including running, cycling, hiking, fishing, etc. The bladder is made of EVA material and it's BPA-free , and no taste with large 3.4-inch (8.6 cm) opening for ice that also makes cleaning easy. UNIQUE COMPARTMENT DESIGN: With two extra pockets on the wide waist straps you can put your phone or other valuables in and take them out freely. An open compartment is designed to conveniently store your quick-dry sweat towel, umbrella or hat. These unique designs make this pack more practical. HYDRATION INSULATION LAYER: With a hydration insulation layer made from high-quality aluminum foil that keeps liquid cool for up to 4 hours, (works great for 2.5L bladder), this daypack can also be used as a hydration backpack or portable cooler for both indoor and outdoor. There is even a clip on your right shoulder strap to help fix the hose of the bladder. CONFORTABLE AND RELIABLE: Ventilated mesh padding are added in the shoulder straps, waist straps and back area to ensure comfort of the pack. Thanks to its high density water-resistant nylon material, adjustable straps, heavy duty and hidden-teeth zippers, safety reflectors on the shoulder straps and front of the pack, this daypack is super durable and reliable for both men and women in their daily use. Guidance of RUPUMPACK: If you have any quality problems within ONE YEAR, you can feedback to us at any time for after-sales service.