Polyester
Trusted & Authentic: The Original McKenzie Lumbar Roller for Back Pain Relief; The Best Selling Lumbar Pillows & The Recommended Choice of Physiotherapists, Chiropractors & Back Pain Professionals Worldwide
Superior Construction: High-quality, long-lasting foam with removable 100% wrinkle-resistant, moisture-wicking polyester cover
Versatile Use: Can be attached to office chairs, vehicles and airplane seats; Built-in strap securely attaches to most chair backs or around the waist
Professional Support: The design ensures proper spinal alignment and posture while sitting, providing comfortable back pain relief for the lumbar (lower back) region