The Velcro backing allows these ergonomic supports to secure to the Standard Back (in the Deluxe Set only) as you adjust the support to fit your individual needs. 

Features:

• These highly versatile cushions allow you to customize your comfort by increasing or decreasing the depth of your ergonomic cushion
• Portable
• Made in the USA

Common uses:

• For clients who need a customizable adjustment to their sitting position

Additional Details:

• 5.25" x 3.5"
• 1" thickness
• Dimensionally stable fabric engineered for versatility and durability
• Plain poplin finish made of polyester