Bakugan Rolling Backpack - Bakugan Full size Wheeled Backpack ( Red ) Size 16in x 12in x 5in Adjustable straps for a personalized fit 2 rommy front zipper pocket and 2 side pockets to hold bottle and accessory smooth rolling luggage wheels on the bottom padded, adjustable shoulder straps on the back, intelligently curved to fit your shoulder contour comfortably