M-24 Manual Inflatable Life Jacket by Onyx Outdoor®. When enjoying a day on the water with friends, you want to move around freely whilst staying protected. Featuring the lightweight, low-profile design, this inflatable jacket is going to provide you with maximum safety and convenience. The vest ensures a snug fit and inflates just in seconds to provide buoyancy and support. Plus, it is sewn from materials that are durable and stretchable to ensure long use and great wearing comfort.