: I live in San Francisco and just bought a kayak that is 10 years old. It's a
: seat inside white water kayak it looks like.

If it's a 10-year-old whitewater kayak--correct me if I'm wrong--I would guess it's probably a plastic model, and you may be able to read the model name on a sticker on the side of the boat?

Get that information, and we can help you contact the manufacturer. Most whitewater kayaks are pretty uncomfortable without a seat!

Shawn

: There's not seat inside.
: Do I need one ? If yes where can I get one ?
: I paid the kayak $60 from a guy who did not really knew what it got. The
: kayak came with multiple flotation device with different forms. One of
: them is yello and once inflated looks like a 8 shape kind of.

It may have various 'float bags' to provide the kayak with positive flotation if it becomes flooded.

: I can email you some pictures if you can help me out.

Sure, do!