The MET is a lightweight open-loop system composed of a sturdy strap and aluminum windlass. As a true open-loop system, this tourniquet comes apart completely to place around a limb and doesn’t need to be fully cinched down prior to engaging the windlass; even if loosely applied, by turning the windlass the slack will uptake and fully tighten the tourniquet. It has two securing points to lock down the windlass after application: one that is adjustable and one with Velcro.