HELESIN RV-Folding-Step, 19″ x 14.5″ Aluminum Platform Step and Ladder Supports Up to 1,000lbs, Includes Non-Slip Rubber Feet, More Stable for Trailer, Motorhome, SUV, Camping
Aerobic Exercise Step Platform by Day 1 Fitness – 28in x 14in CIRCUIT SIZE STEP with 2 RISERS – Non-Slip and Shock Absorbing Surface – Premium Gym Equipment and Accessories For Home, Adjustable
So far, I've only used the first level, on carpet, and it works as it should. I can't speak...
Aerobic Exercise Step Platform by Day 1 Fitness – Adjustable Workout Stepper – 40in x 14in – 4 Riser Options – Non-Slip and Shock Absorbing Surface – Premium Gym Equipment and Accessories For Home
Sammons Preston Aerobic Exercise Step, Step Platform for Workouts and Exercise, High Step Platform with Risers, Stepper for Physical and Occupational Therapy, Exercise Equipment with Height Adjusters