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

Set of 4 Non Slip Rubber End Covers for Fitness Equipment and Chair Legs (30 * 30)

Non Slip Square Tube Covers 2pcs Foot Protectors for Gym and Chair Legs (40 * 40mm)

Oar Chair Cushion, Oar Chair Cushion, Oar Chair Cushion, Non-Slip Comfortable Design Cushion with Rowing Straps

Adult Bench Press Training Chair Men's Strength Trainer Sit-ups Fitness Chair Indoor Exercise Equipment (Black 147cm*45cm*120cm)

Dumbbell Bench Fitness Chair Home Sit-Ups Fitness Equipment Professional Bench Press Flat Chair Rowing Machine