Specifications:
Color: Black/Green/Bright Green/Blue/Purple/Rose Red/ Orange/Silver Purple /Silver Blue
Foldable: Yes
Capacity: 20 liter
Material: Water resistant nylon, ONLY water repellent, NOT waterproof
Weight: Approx. 8oz / 0.5lbs / 0.23kg
Unfold: 16.5*12.6*6.9 inches / 42*32*17.5 cm
Folds up: 7*7*1.6inches / 18*18*4 cm

Features:

a, Durable abrasion resistant SBS metal zippers , won't get seized.
b, Straps slightly padded with very light "spongy" feel , wide and comfortable to wear, won't cut into your shoulder.
c, Places were reinforced with bar tacking especially the stress points,built for last long.

Perfects For:
Day to day use
Light packing purpose
Vacation, holiday, urban travel
Weekend trips to parks/shopping
Outdoor activities: overnight camping, day hikes, short-hiking, jogging,  cycling,mountain climbing,
winter skiing, ice skating, summer swimming, go to beach, gym fitness, walking dog,etc
Great gift idea & festival presents for men, women, oldest and anyone.

Please make sure you note that:
Please beware that the 20 litre backpacks have no padding or protection on the back and bottom.
Due to the light bars and the brightness tolerances between the monitors, the colors may slightly vary.