The Onyx Kayak Fishing vest is feature-rich but yet a great value! Designed with four different pocket designs and functions to hold your essential gear and keep you fishing longer. In addition to the zippered fleece-lined pockets and the zippered chest pocket, radios or pliers can slip down and clamp to the pocket/vest through the opening at the top of the pocket, to keep them easily accessible. The one-button push drop down tray pocket holds a small tackle box. The six adjustment straps can be adjusted up or down depending on your activity or the heights of the boat seat or kayak. The high back of the vest does not get in the way of the seats and has mesh for breathability. Universal size fits 30"-52" chest. Oversize fits 45"-65" chest. U.S. Coast Guard Approved.

Six adjustment straps to cinch vest up for a snug fit

High foam back accommodates high back seats

Pockets designed for your essential gear

Breathable mesh lower back

Comfortable neoprene shoulder pads

Is this vest USCG approved? Yes, it is rated for inland use. I don't have the tag anymore or I would quote the class and rating but I remember double checking for lakes and rivers. Offshore I can't comment because I tossed the tag.

How big is oversized? I'm 6'5 and 275 and even I needed to pull the adjustment straps pretty tight. Definitely made for a larger person.

Will this vest fit a 300 pound fat man? I believe it would.

Is this a flotation device? If so, how well will this keep a 180lb person afloat? This is a flotation device and should work well for a 180lbs. person. I am over 200 and this fits me well. I have not been in the water with it though, so I can't say how well it floats a person.