Sports Water Bag Waterproof Cycling Bicycle Bike Backpack Outdoor Camping Hiking Climbing Bag Hydration Backpack Power supply: 4pcs AAA batteries

Power supply: 4pcs AAA batteries ( not included )

Adjustable strap for a secure fit

you can get cool and comfy wind

1 X Printer Pen

Sports Water Bag Waterproof Cycling Bicycle Bike Backpack Outdoor Camping Hiking Climbing Bag Hydration Backpack Power supply: 4pcs AAA batteriesProduct Features: 1 Breathable and thicker back pad,keeping back dry and comfortable. 2 Waterproof ,wear resistant ,anti tearing nylon fabric,to assure the bag using longer. 3 Lightweight,the bag weight only 0. 4kg,feeling more relax when hiking,running or trekking. 4 The bag could be used with water bag for drinking when do sports. (Water Bag is Note included) 5 The shoulder strap has phone bag,can put 5. 5 inch phone. Size: 45*15*18cm Note: Please