This backpack is made of high-quality nylon fabric, lightweight and tear-resistant. It can be folded into the bottom pocket for easy storage and carrying, very convenient for cycling, running, camping, traveling, and other outdoor activities.

Features:
Crafted from ripstop nylon fabric for extreme light weight and durability.
Main compartment with a special sleeve for your hydration bladder.
Zippered front pocket for small items; Waist pocket keeps your mobile phone at hand.
Breathable mesh back and shoulder straps provide ultimate comfort.
Reflective elements for added visibility and safety at night.
Folds into the zippered bottom pocket to fit anywhere.
Comes with a 2L water bladder to keep you hydrated all day long.
Perfect backpack for cycling, camping, hiking, traveling, and other outdoor activities.

Specifications:
Material: Nylon
Color: Green / Black / Orange / Yellow (optional)
Dimension: Approx. 40 * 20 * 7cm / 15.7 * 7.9 * 2.8in
Weight: 265g / 9.3oz

Hydration Bladder:
Size: 40 * 17cm / 15.7 * 6.7in
Hose: Approx. 99cm / 39.0in
Weight: Approx. 125g / 4.4oz

Package List:
1 * Backpack
1 * Hydration Bladder

Style 2:

Features:
Water repellent and tear resistant nylon fabric.
Fine quality zippers, easy zip and unzip.
Breathable padded back panel,adjustable sternum strap and shoulder strap.
Side and front adjustable straps for hanging anything you need.
Waist pack for cell phone, keys, small accessories.

Specifications:
Material: Nylon
Color: Black-Gray, Black-Green, Black-Orange, Black-Yellow(Optional)
Capacity: About 10L
Size: 440 * 250 * 90mm / 17.3 * 9.8 * 3.5in
Package size: 450 * 270 * 100mm / 17.7 * 10.6 * 3.9in
Package weight: About 280g / 9.9ounce

Packing List:
1 * Cycling Bag

Soft Flask:

Features:
Made from environmental friendly TPU material, BPA & PVC free,  odor proof, safe without toxic, can rest assured use.
Wide opening design, convenient to fill and clean.
Soft silicone nozzle provides fast water flow.
Thread cap is for easy open.
Can be easily loaded into the backpack by the bottom hanging ring. 
Durable and reusable,can use for times and just so light for carry.

Specifications:
Material: TPU + PP + Silicone gel
Color: Blue
Capacity: 500ml 
Product Size: 30 * 10 cm / 11.8 * 3.9 in
Product Weight: 40 g / 1.4 oz

Packing List:
1 * Soft Flask

Style 2:

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1.We ship by China post,HK post EMS,DHL, Fedex ,according to your choice when placing orders .
2.If you didn't receive the item after 45 days,please feel free to