GSTgear inflatable seat for The seeker packraft.
The seat has an integrated valve which makes it easy to inflate to wanted level.
The valve is on the upperside, but can also be turned down if wanted. Reason for this is that you can easily twist the valve while in use, you can then let out air if you find yourself in bad weather, river or other situations where you need to change your center of gravity to make it more stabile.