Soft Material The Donut Pillow Is Made of Soft and Durable Pvc Material. Non-toxic or Tasteless, Reusable and Durable. Pain Relief These Extremely Comfortable Pillows Are Ergonomically Designed and Medically Approved. They Are Ring-Shaped to Allow Pain Relief By Evenly Distributing The Body Weight. Anyone Can Use This Pillow to Relieve Pressure On The Spine and Relieve Back Pain. Hygienic This Pillow Does Not Contain Any toxic Rubber Elements and Is Completely Odorless. The Pillows Are Machine Washable So They Can Be Washed and Cleaned for Use In An office Chair or Wheelchair, or for General Use Only. Easy to Inflate The Ring Pillow Can Be Easily Inflated and Inflated for Custom Strength. The Included Pump Allows The User to Pump Air Into The Pillow without Feeling Breathless and Wrapped. The Valve On The Side of The Pillow Can Be Squeezed Slightly for Maximum Comfort and Strength. Portable The Fully Inflated Pillow Is 15 Inches. When Deflated, It Is Compact and Can Be Easily Folded Up and Put Away for Travel and Commuting Purposes.