Four-way adjustment for a perfect fit. Tough, smooth nylon cover prevents chafing under arm; waterproof closed-cell foam padding won't absorb body moisture; smooth nylon lining for easy drawing and holstering. Molded thumb break and non-stretch retention strap adjustable with Velcro®. Patented Strap Traps? cover both thumb break and retention strap Velcro® so straps cannot be accidentally stripped away and lost; adjusting tool included. Removable onside tie-down anchors holster to belt with trouser clip.