Chirp Wheel+ Foam Roller for Back Pain Relief, Muscle Therapy, and Deep Tissue Massage - 4 Inch, Holds Up to 500 lbs.

did absolutely nothing for me. very sad very disappoint. no cracky backy.

This has been wonderful on my neck. I thought it was going to roll like the other ones but it works better to just position my neck and give me a break from the pain. I use it daily. I can roll it on my back.

Fits perfectly in between the shoulder blades. Comfortable and effective for me and our son so works for multiple sized people.

This thing is amazazing!!! I weigh about 300 lbs, but I still get around. Anyway, I HAD the worst lower back pain nearly everywhere I went. I have used this about a week, not only was the pain instantly gone, the more I use it the less it comes back. My back feels amazing!!!! However, if you have back pain from an injury, I would talk to your doctor.

Effectiveness depends on the width of your back. I am a 44 to 46 and it fits my problem area perfectly.