Dear ONE PIECE’s fans,welcome to our shopsMaterial: Environment Friendly Light Super Polyester Canvas And Smooth Zipper.Features: Ergonomic Design, Adjustable Shoulder Strap And Back Cushion Filling To Provide Comfort And Protect Your Back When You Carry Heavy Objects. No More Shoulder Discomfort.Application: Suitable For School, Work, Weekend Vacation, Travel, Hiking, Camping, Cycling And Other Outdoor Activities. It'S Also A Perfect Gift For Family, Friends And Children On Valentine'S Day, Christmas, Thanksgiving, Birthday And Halloween.NoteThis product is subject to specific safety warnings.The size is measured manually, the actual size has a deviation of 2-4cm, please understand!Warning: not suitable for children under 36 mAonthsAttention: this toy does not provide protection