Foam Roll measuring 3.5" x 14" with a ILD of 70. This 70 ILD roll will become softer with repeated uses. We also carry a more dense roll of 90 ILD. Covers are 100% nylon with a zipper closure. Covers will help protect the foam roll underneath, create smooth edges, add a soft touch, and a layer of comfort. The polyurethane foam roll is lightweight and durable. Posture rolls are a very effective external apparatus used to re-establish the natural spinal curves to improve your posture. You were born with an S-Curve in your spine and its time to get it back and keep it balanced. This is the ORIGINAL 70 ILD Foam Roll first designed and sold by Crooked Human® and is available exclusively on our own website and has been since 2011. We are aware of knockoffs being produced of this product. We are also aware the picture on this page (which is an original picture of a roll manufactured and sold by Crooked Human) is being used on other companies websites. The foam roll pictured here is an exclusive Crooked Human Roll and it is not available anywhere else. The only way to ensure you are getting a genuine product of what's pictured here is to buy from us directly. Manufactured for Crooked Human®. Made in the USA