Huanuo Memory Foam Seat Cushion for $12.99

Ooh $12.99 for a memory foam seat cushion sounds tempting for my desk chair and long car rides. Might try one but wonder if it's firm enough to actually help my back or if it flattens out after a few weeks.

Ooh this price makes me tempted to get one for my long Switch sessions. Has anyone tried it for car commutes or office chairs, does the foam flatten after a few weeks? If it actually keeps shape I could use it for couch marathons and handheld gaming, otherwise I might skip.

Bought one for my home office chair and it actually made long Zoom calls less painful, though it was a bit firmer than I expected and had a faint new foam smell for a day. If your car seat is narrow measure first but worked for me in CA.