Polymer and nylon construction Flexible thigh platform conforms to leg size Y-harness suspension system No snaps or hooks to accidentally open When the mission calls for maximum security and retention, the Level 3 Serpa Tactical Holster is a great choice. It features a flexible thigh platform that is breathable and comfortable as well as being very stable. The weapon is held firmly in the holster by a thumb activated pivot guard and the Serpa Auto Lock release. Weight is distributed evenly by the Y-harness.