【How to Customize】- Please click the "Customize Now" button first, then upload your name and number to customize your backpack. 【Product introduction】- Size:17"x11"x4.5".The length of the shoulder strap can be freely adjusted, and this part is made of thickened pearl cotton pad material, which can effectively relieve pressure on the shoulders. 【Backpack Performance】- This backpack is big enough to hold books, laptop, pencil boxes, water bottle and umbrellas,etc. 【Applicable scene】-Daily, Campus, Travel, Outdoor.It is a great backpack for casual life.Also is an amazing and practical baseball fan gift for family, friends, colleagues, and most importantly for yourself. 【Special Instructions】- It takes 3 days to prepare customized products. If you have any questions, you can contact us without hesitation