Quick-Assembly Oak Wood Foldable Pilates Reformer Machine for Gym and Home Use. Premium Thailand Oak Wood Frame The frame is made of oak wood imported from Thailand, the structure is strong and the weight is lighter. Frames come with a 5-year warranty. Imported piano-grade springs, made of high-quality carbon steel, deliver uniform and smooth resistance. Tested to withstand 800,000 stretches without deformation or loss of elasticity. Microfiber leather made of premium synthetic material, featuring excellent breathability and superior abrasion resistance. It won't crack under frequent use and delivers skin-friendly comfort. Silent & Smooth Sliding System, equipped with precision bearing rollers and polished steel tracks, enabling ultra-smooth, quiet and labor-saving sliding.