Product code: 15901737 / 317467
The Nite Ize SlideLock Carabiner has a slide-to-lock feature that securely locks the gate with a simple push and slide movement, and unlocks when you want it to just as easily.
The rectangular stainless steel body is low profile, and slim; it feeds more easily through smaller openings and rests flat in pockets.
Size 4 would be perfect for attaching to a belt loop or backpack to carry slightly larger items like bottles.
WARNING: Not for use where disengagement could result in bodily injury or property damage. Not for climbing.