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. Roomy main zipper compartment with interior slip pocket keeps items closer to the wearer's back for optimal weight distribution. Front knob-shaped zipper pockets hold small supplies. 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. 360 degree reflective details increase visibility. Main body is constructed with premium-quality recycled PET fabric; lining has bright LEGO brick print. YKK zippers have custom LEGO brick pullers. Materials are CPSIA compliant and free of PVC, lead and phthalates.