This Neil Pryde High Hook vest can be put on like a bulletproof vest (opening on the right side). It is CE approved and will ensure maximum flotability while remaining very light. 

 On the front a large pocket will allow you to store your keys, your phone (in a waterproof cover !!!),  and other small accessories that you consider useful ... 

 Its bright color and reflective panels, will help the rescue locate you "easily" in the event of a hassle for maximum security !!! 
 Buoyancy aid.