Features lightest, most breathable Tekvest™ available high tenacity, vented mesh, ripstop nylon shell with ventilated soft-armor configuration uhmw [ultra high molecular weight] plastic eight times more cut resistance than hdpe more flexible than poly carb mx gear armor does not absorb water action-cut for the full range of motion built with 4” of waist adjustment & will not ride up or tap your helmet run it loose for greater comfort & increased airflow run it tight for excellent back support compatible with most popular fanny packs 3M Scotchlite™ reflective piping for increased visibility when worn externally quick-attach deluxe uhmw shoulder pads are available as an option