When it comes to the ocean, there is very little we know. Despite all our advancement, the ocean remains as unpredictable and mysterious as it was decades ago. Although there is nothing we can do about the nature of the sea, we do have top of the range buoyancy and flotation suits to help you should the worst happen. Everything in our marine protection range has an inherent buoyancy of greater than 50 newtons and is designed to protect against the onset of cold shock and hypothermia. Shop EN399 275N life jackets.