Nothing saves the day quicker than a handy safety whistle. The next time you set out on an adventure, grab the Whistle Buckle Kit by Gear Aid®. Featuring a ¾’’ side-release sternum strap buckle with built-in safety whistle, quick attach tri-glide webbing attachment and detailed instructions, this high-quality buckle replacement kit requires no sewing. Stabilize loads, while staying safe with the Whistle Buckle Kit by Gear Aid.