John,

I have several, all of which are different brands. Since I have only had to perform CPR in the back of an ambulance, or in the patients home and have had "full resuscitation" equipment, I have not had to use my pocket masks at any time. I do know the Laerdal masks are designed to actually fit an adult size BVM.

My primary carry pocket kit when on ambulance duty is the MDI rescue holster, which is found on the same website as Jim mentioned, just scroll down. I use the gloves from it with every patient contact and then replace them. I modified the contents of the holster when I noticed after a couple of years or so the mask was "splitting" from age. I put in the Laerdal key chain mask in a zip lock baggie and then added a small bottle of Purell. I actually have two pairs of gloves in the holster as one pair may rip, or you actually have to double glove.

Gloves in these kits (unless they are vinyl) should be replaced often as they deteriorate from age.

Take care,

Stargazer