it for long periods of time. it's take a little getting used to using it daily and for long periods. due to this, i would switch it off and on during the day but it does the job.
i also received the stress roller. i'm a huge fan of foam rollers and this is a nice supplement to the foam roller. it's essentially two little balls that are sewn together for use on your muscles. they are hard balls too so you can really dig into your muscle where you might not be able to on a foam roller. it also includes little instructions to show you different types of exercise 