600D Polyester – D stands for denier which represents how many fibers are in the cross-section of the material. With a lower denier (like 420D polyester) the fibers are more fine, however not as durable or strong as a higher number like 600D polyester.

Large main compartment with internal mesh zippered pocket

Side mesh water bottle pockets

Youth-specific shoulder straps with easy-to-use sternum strap

Front adjustable bungee cord

Comfortable, stitched foam back panel

Reflective safety piping