... production, the price is the lowest.·The design is fashion and scientific.·Streamlined decompression adjustable back-strap can be adjusted ... scatter the bag and lighten you burden.·Thickening shoulder belts with good elasticity are comfortable,and help to straighten ... bag, backpacks bag, laptop bag, trolley bag, mountaineering bag, fashion bag, shopping bag, wallet & waist bag, briefcase, travel bag ...