The Vibe n' Roll is small enough that you can take it with you wherever you go, allowing you to have the benefit of a vibrating roller massage anytime. It is covered in a unique, layered grid fabric that is durable and helps to circulate air. Its easy grip ergonomic shape makes this foam roller more comfortable and easy to use on curved areas such as the neck and shoulders. It is powered by 2 AA batteries that are easy to replace even when you're travelling. Works well as a lower back support when sitting to encourage healthy posture.