● Item No.: SSD37-02-017● FOB price:8-9.75USD● MOQ: 1000● Material:nylon or customized● Size:44*21*33 cm or customized● Weight:2.2KG● Colors: Customized● Service: OEM&ODM● Detail:1. Double zipper puller can increase the life span of one times.2. Lovely and beautiful cartoon design,and inside is full of sponges,which add a sense of three-dimensional for the backpack.3. Three wheel design can climb the stairs,durable and easy to use.4. Three sections trolley can be adjusted according to the height of the students in different grades.