LEGO Brick Stack Eco Heritage Classic Backpack, Blue, One Size Ergonomically padded, contoured shoulder straps have a reflective brick detail. Soft poly tricot on shoulder straps & padded haul handle make transport comfortable. Adjustable front sternum strap helps balance the load with an easy click. Padded back panel has LEGO brick stitch detailing. Front volume zipper pocket has organization panel for pencils and small supplies. Roomy main zipper compartment with interior slip pocket keeps items closer to the wearer's back for optimal weight distribution. Side mesh pocket holds a water bottle or other quick-access items. Front D-ring provides convenient attachment point for lunch bag or other belongings. Interior name tag lets you personalize it. 360 degree reflective details increase visibility. YKK zippers have custom LEGO brick pullers. Main body is constructed with premium-quality recycled PET fabric; lining has bright LEGO brick print. Materials are CPSIA compliant and free of PVC, lead and phthalates.