gelindo insulated hydration backpack pack with 2.5l bpa free bladder - keeps liquid cool up to 4 hours, water backpack for hiking camping cycling running, 18l gelindo <p><b>perfect companion for daily use & outdoor adventures</b></p> <br>looking for an awesome daypack or a practical gift for your family or friends? this daypack is definitely your best choice. the lightweight daypack with a large capacity and stylish look works great for outdoor adventures like running, cycling, fishing and hiking or leisure activities in or out of the city. furthermore, with the hydration reservoir compartment that works great for 2.5l bladder and can keep liquid cool for at least 4 hours, this pack can also be used as a cooler bag. </br> <p><b>why choose gelindo daypack:</b></p> <br>- lightweight with large capacity , perfect for day-to-day use or occasional travel.</br> <br>- comes together with a 2.5l hydration bladder to give your extra bonus.</br> <br>- with the open assistant compartment you can conveniently store your quick-dry sweat towel, umbrella or hat </br> <br>- two extra pockets on the wide waist straps are specially designed for easy and safe access of your valuables -hydration reservoir compartment works great for 2.5l bladder and can keeps your liquid cool for up to 4 hours</br> <br>- safety reflectors on the shoulder straps and front side of the backpack</br> <br>- shock absorbing chest strap and built-in safety whistle for any urgent use </br> <br>- adjustable shoulder/chest/waist straps for a customizable fit</br> <br>- hidden-teeth zippers and durable water-resistant nylon material </br> <br>- breathable shoulder straps and mesh ventilated back promise an enjoyable and comfortable carry </br> <br>- 100% satisfaction guarantee. great gift for your family or friends, for both men & women.</br>