Cruiser R model motorcycle seat cushion. It is essentially brand-new (no packaging or tags) - I received as a promo a couple years ago. Used once, so I can attest it does feel comfy, but my bikes are 'tall' enough as it is. Retails for $109.
Details from AirHawk site:
AIRHAWK® Cruiser R Small, Covered in breathable Spacer Mesh cloth material w/red vinyl accent, non-skid bottom material.
Built-in stress relief design features - reduced pressure points on tailbone, scrotum and prostate.
Cell heights are lower on front for better leg passage.
Air pad made of durable polyurethane - inflate to amount of cushion desired.
Cover: Breathable spacer mesh with non-skid-bottom.
Cruiser straps included.
https://airhawk.net/product/cruiser-r-small/
Measures 11″L X 11″W x 1"H (and more, depending on extent of inflation)