Maybe one of these similar products would be of interest:-

2K Fit Rowing Machine Seat Cushion (Model 1) for The Concept 2 Rowing Machine with Medium Thickness Dual Density Memory Foam, Washable Cover for Indoor Erg, Concept 2 Rower, Water Rower Seat Pad

2K Fit Rowing Machine Seat Cushion (Model 2) for The Concept 2 Rowing Machine with Custom Memory Foam, Washable Cover, and Straps- Concept 2 Rower, Recumbent Stationary Bike, WatterRower Seat Pad

2K Fit Rowing Machine Seat Cushion (Model A) Memory Foam & Washable Cover >NEW<

2K Fit Rowing Machine Seat Cushion w/ Memory Foam & Washable Cover NWOT

Garmen Bibo Fit Junior 3