DOUBLE_B RUCKSACK size:M The lining uses the three-fold

The lining uses the three-fold method for a high-end finish

The upper strap opens wide and can be adjusted and fastened with a velcro strap

and pressing the piano keyboard with small children

and quick-drying properties

DOUBLE_B RUCKSACK size:M The lining uses the three-foldA backpack with a cool design. The double B color scheme matches the American casual style. Enhanced functionality with pockets on both sides, surface and inside Made with lightweight polyester Ox material Open and close with double door zipper The back is cushioned with mesh for breathability A cushioned shoulder belt reduces the burden on the shoulder. With a reflector on the shoulder belt for safety in low light conditions Convenient chest belt