Review on Enhancing Emergency Response: One Way Breathing Barrier Training for Lifesaving Preparedness by Jason Lockwood

My sons are in the Boy Scouts and Boy Scouts. My eldest, a boy scout, is working on his first aid achievement badge and he needed them for his gear. I was very happy to find them at an affordable price and there were six in the pack. Also very happy with the size. They are packaged to be very small and compact. Size 2x2 inches. Small enough to fit in a kit. There is also a ring on the outside so you can hang it on your kit as you wish. Obviously we haven't used it yet, but I'm glad they're on hand.