Bass Pro Shops offers the Bass Pro Shops Canoe Stadium Seat in Black/Blue for $29.97. Plus, coupon code "BOAT25" bags free shipping. (Make sure you have "Economy" shipping selected.) That's a savings of $20 and the lowest price we could find. It features four reclining positions, strap and buckle system for attachment to a canoe, built-in cup holder, and dimensions of approximately 17" x 16" x 11".
Note that the bottle pictured is not included.