Purchased on Amazon in 2021. Currently still sold, with a list price of 12,100 yen (9,480 yen on sale). The actual size is larger than the size listed on Amazon. - Brand: Tempur - Model: Cushion for Chair Seat Cushion-S - *Actual measured size: Width 41cm x Depth 43cm x Height 5cm - Color: Navy - Features: With handle While I haven't noticed any changes in resilience since I purchased it, I have used it about twice a week (7 hours each time), so this is for sale to someone who understands that. Thank you for looking.