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

Crew Rowing and Sculling Anti Slip Seat Pad by Hornet Watersports- Anti-Slip and Increases Comfort

Yonxuleo 3-in-1 Foldable Rowing and Ab Machine with LCD Monitor for Full Body Workout,Rowing&Abdominal Trainers AB Workout Machine Home Gym Fitness Equipment

Rowing and Sculling Anti Slip Seat Pad - Anti-slip and Increases Comfort

Hornet Watersports Crew Rowing and Sculling Anti Slip Seat Pad Anti-Slip and ...

Adjustable and Easy to Use Pedal Straps for Rowing and Fitness Bikes 2pcs