3/8" opening for straps or webbing, side-release, contoured. 25 different colors (see photo): 1. Pink2. Hot Pink3. Red4. Bright Red5. Orange6. Gold7. Yellow8. Pale Yellow9. Pale Green10. Green11. Vintage Turquoise12. SeaFoam Green13. Blue14. Navy Blue15. Purple16. Lavender17. White18. Light Gray19. Dark Gray20. Forest Green21. Olive Drab22. Coyote Brown23. Sand24. Khaki25. Desert Tan (4 of each). *Not all colors are interchangeable with one another. Contact seller for details.* Actual colors may not match photos exactly due to differences in light while photographing, differences in monitors, etc.