The 6” Deep Tissue Chirp Wheel+ is part of the second edition of Chirp Wheels. It features ½” thick padding, a spinal canal, and is completely PVC free. It applies the most pressure, when compared to the 10” Medium PW+ and the 12” Gentle PW+. You can use the product on the ground, against the wall, or in an office chair to improve posture. The Chirp Wheel is exactly what your back is craving. Seriously, we've sold over 500,000 wheels! Your back pain has never been easier to fix. The Chirp Wheel is designed to fit perfectly between your shoulder blades, targeting the muscles that go up and down your spine. As your back is strained from the countless activities you do, those muscles lock up, causing even more pain. The Chirp Wheel massages those muscles, relaxing your back and relieving all of the pain. Testimonials: "The Chirp Wheel is effective because it tractions the spine and takes the pressure off the discs. It keeps, maintains, and helps correct the natural curvature of the spine. I highly recommend the Chirp Wheel to all my clients.” -Dr. Mike Vanchiere Spinal Rehab Chiropractor Customer "The greatest gain I've had is in general mobility and feeling good in the morning. I roll out of bed every day and straight onto the wheel. It gets all the early morning kinks out.” -Kate C. Amazon Review “Perfect for my husband who is always hunched over a computer. We both never have the time to go to the chiropractor regularly, but the wheel is amazing at taking care of the aches and pains for us.” -Jenna W. Website 5-Star Review (5 stars) “I have struggled with pain in my neck and back on and off for the last 30 years. Recently I have been dealing with a bulged disc. When I found the Chirp Wheel I decided to give it a try. It is Great! I can gently put space between my vertebrae and loosen up tight muscles. Best back pain relief Iʼve had in years. Highly recommend it!” -Greg C.