Mustang Survival has obtained the exclusive rights to market the newly designed Hammar hydrostatic inflators in North America. These inflators are activated by hydrostatic pressure when immersed in 4 inches of water and do not require inflator maintenance for five years(unless fired). Another great benefit is that they will not inadvertently inflate as a result of wash, rain or humidity, which makes them ideal for use in severe or high humidity weather. The two models, both automatic with manual backup, are the MD3153 and the MD3154 that has a newly designed lightweight integrated sailing harness. A safety inspection window shows the inflator indicator status (green indicates ready for use) and replacement date (good for five years).