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 and will not ride up or tap your helmet run it loose for greater comfort and 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