This open top tactical holster features the Automatic Locking System (ALS). Once the weapon is holstered, it locks into place. When the ALS is de-activated by the thumb, a simple straight up draw is used. It features the single strap leg shroud allowing the holster to be worn higher on the thigh. This model is constructed of the innovative SafariSeven material, a unique nylon blend from DuPont. SafariSeven is highly durable and practically impervious to the elements.