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

Hudson Boon Rowing Machine High Quality Memory Foam Seat Cushion Pad Anti Slip

Washable Rowing Machine Seat Cushion Non-slip Memory Foam High Quality

Elevate Your Workout with Adjustable Rowing Machine Pedals Superior Quality

Concept 2 chain holder maintenance, new, High-Quality Handlebar holder, EASY

Rowing Machine Seats Wheel with High Carbon Steel Bearings Support High Load