This holster is no bigger than most slide designs, yet offers the ability to carry a spare mag. BLACKHAWK!"s flex-design hugs the waistline and offers a compact, complete package. Rear belt loop works with unique dual front belt loop design to allow use as strong side or appendix carry. The holster features open bottom allows use of different slide lengths and increases versatility, is available for single-stack and double-stack magazine pistols, and offers the unique dual front belt loop allows multiple carry modes.