Stay warmer - float higher. The Anti- Gravity Shirt is designed to supplement the flotation of your PFD, lifting you higher without restricting your mobility. Our windproof Mystery™ material provides a thermal layer that is comfortable next to the skin and can be worn over other layers. Polyolefin-foam flotation panels are arranged in an ergonomic pattern in the front and back to move with your body as you paddle. A perfect way to add flotation on big-water days or increase impact protection for those Drops! Flotation: 10 lbs. This shirt provides supplemental flotation but is not a Coast-Guard approved flotation device. It is not intended to replace a life jacket.