Stowage...and flotation - the name says it all. Float bags provide kayakers with ease of rescue if they swim, and give paddlers the added benefit of a place to keep dry gear. The Salmon is made to fit in a wide range of boats.  It is wider and shorter than the Futa, with a larger opening and more volume.

Long inflate/deflate tube for easy buoyancy control
Compression strap over the top for custom sizing
Designed for wider, stouter kayaks to maximize all available storage space