Safariland 7378 7TS ALS Concealment Paddle Holster,For Glock 19/23 STX Plain Black,Right Hand Proprietary nylon blend that is completely non-abrasive to a firearm's finish Raised stand-off surfaces in interior of holster creates air space around the weapon allowing dirt and moisture to quickly clear any contact with the firearm Very high heat tolerance; structurally sound at 300 degrees F Very low cold tolerance; structurally sound at -50 degrees F Can be submerged in water indefinitely and still maintain shape and function