Cycling Hydration Backpack

Features:
Superior nylon, rip-resistant and water-resistant, wearable and durable.
Back meshes design for breathable and moisture-absorbing.
Extendable waist strap and adjustable chest strap make a best fit with you.
Adjustable tightening string to stabilize the backpack.
Several pockets in different sizes to hold various items, sorted more orderly.
Two alpenstock stabilization straps for carrying your alpenstock conveniently.
Water bags with waterpipe rode for you to drink water conveniently in outdoor activities.
Front and back reflective strips ensure your safety for night cycling.