They should not be stowed in plastic bags, in locked or closed compartments or have other gear stowed on top of them. Throwable devices must be immediately available for use. Though not required, a PFD should be worn at all times when the vessel is underway. For Type V PFDs to be counted they must be used according to their label requirements. When available, Coast Guard Approved Inflatable PFD's will be authorized only for adults.
Some states require that PFDs be worn by children of specific ages under certain conditions.
Check with your state boating safety officials. It is effective for all waters, especially open, rough or remote waters where rescue may be delayed. It is designed to turn most unconscious wearers in the water to a face-up position. This type will turn some unconscious wearers to a face-up position in the water. It is designed so wearers can place themselves in a face-up position in the water.