This holster with ALS builds on the foundation of the SLS.

Model 7360 7TS ALS Level III Retention Mid-Ride Holster, Right Hand, SafariSeven, Plain Black.
Fits: Glock 20, 21, 21SF with STD Glock Rails with TLR-1, Surefire X200, X300, X300U

It locks the weapon in all directions upon holstering; it's operable with the thumb; and the weapon can be drawn straight out of the holster with no twisting required. The mid-ride belt loop allows the holster to ride close to the body.

This model is constructed from the innovative SafariSeven material: a unique nylon blend from DuPont. SafariSeven is highly durable and practically impervious to the elements.
Features:

• Level-III Retention Holster ALS secures weapon once holstered, simple, straight-up draw once release is deactivated
• SLS Rotating Hood installed
• A proprietary nylon blend that is completely non-abrasive to a firearm's finish
• Raised stand-off surfaces in the interior of the holster create air space around the weapon, allowing dirt and moisture to quickly clear any contact with the firearm
• Very high heat and low cold tolerances structurally sound from 300° F to -50° F
• Can be submerged in water indefinitely and still maintains its shape and function
• Matte finish designed to decrease reflection and can be maintained with a simple scouring pad