Safariland 6354 ALS Tactical Holster without SLS, with Quick Release Leg Strap, Black, STX, Glock 17 with TLR1 ALS (Automatic Locking System) secures weapon once Holstered. Low-Ride level Simple Straight up Draw after deactivating the release Standard double strap leg shroud with mounting holes for optional accessories Safari laminate Thermal Molded construction protects the handgun and sights Holster is completely operable with the thumb Once the weapon is holstered, it "locks" into place Thermal molded SafariLaminate protects the gun and the molded sight track and soft SafariSuede help protect the sight and finish Lightweight and simple to operate leg harness, combined with leg shroud provide comfort and stability Detachable Buckle on the vertical leg strap for added versatility.