What is KYDEX? Advantages, disadvantages, and comparison to leather holsters (Updated 2026).

Last updated: October 17, 2026 · Written by Fuse Gunbangkok. KYDEX is a thermoplastic sheet blend of acrylic and PVC, manufactured by SEKISUI KYDEX (USA). When heated, it softens and can be precisely molded to the shape of a firearm. When cooled, it hardens and retains its shape. Therefore, it is commonly used to make holsters, magazine pouches, and knife sheaths. Its main advantages are a secure firearm lock, resistance to sweat/moisture, and ease of cleaning, making it suitable for Thailand's hot and humid climate. It's important to know that the firearm's surface may naturally develop holster wear. Those in the firearms and tactical equipment industry are likely familiar with the term KYDEX, but many may still wonder what this material is and why it has become a primary choice for manufacturing holsters and other equipment sheaths today. This article summarizes all its properties…

