Sports customized sling backpack bag /drawstring backpack

Sports customized sling backpack bag /drawstring backpack Specification Size 37*44 cm or customized Material Polyester, or customized Colors Green,grey,yellow,blue, could be customized Structure Main compartment Shape Rectangle Capacity Laptop, books, umbrella, mobile phone,IPAD etc Logo Customized( heat transfer printing / puffy printing/ silk printing / glitter printing / PVC patch / embroidery / metal LOGO Service OEM and ODM are accepted. Drawstring backpack is one of