<p>I have the 3-foot version of this one:</p>
<p>[Product:</a> PB Elite Soft Molded Foam Rollers](<a href=“http://www.performbetter.com/webapp/wcs/stores/servlet/Product1_10151_12301_1005566_-1]Product:”>http://www.performbetter.com/webapp/wcs/stores/servlet/Product1_10151_12301_1005566_-1)</p>
<p>it is a molded styrofoam, like the material that styrofoam coolers are made from. The white one is the softer version. The black version that Perform Better sells is denser. This is the one that gyms typically use. However, I would definitely err on the side of softer, even if it means you have to pony up for harder one down the road. Some people find that foam rolling is very painful. Softer foam rollers are going to be less painful for beginners (and geezers)! For the same reason, I would avoid the rollers with hard nubs or bumps for getting started.</p>
<p>This guy is probably well-repected. His tips are probably good:</p>
<p>[Dr</a>. Mark Cheng’s Rehab Prehab Series #1: Intro to Foam Rolling, Lower Back Pain, & the Quads - YouTube](<a href=“Dr. Mark Cheng's Rehab Prehab Series #1: Intro to Foam Rolling, Lower Back Pain, & the Quads - YouTube”>Dr. Mark Cheng's Rehab Prehab Series #1: Intro to Foam Rolling, Lower Back Pain, & the Quads - YouTube)</p>
<p>[Dr</a>. Mark Cheng’s Rehab Prehab Series #2: Finer Points of Foam Rolling & Myofascial Release - YouTube](<a href=“Dr. Mark Cheng's Rehab Prehab Series #2: Finer Points of Foam Rolling & Myofascial Release - YouTube”>Dr. Mark Cheng's Rehab Prehab Series #2: Finer Points of Foam Rolling & Myofascial Release - YouTube)</p>
<p>[Dr</a>. Mark Cheng’s Rehab Prehab Series #3: Foam Rolling the Rotator Cuff - YouTube](<a href=“Dr. Mark Cheng's Rehab Prehab Series #3: Foam Rolling the Rotator Cuff - YouTube”>Dr. Mark Cheng's Rehab Prehab Series #3: Foam Rolling the Rotator Cuff - YouTube)</p>
<hr>
<p>The only safety issue I’ve heard is that it’s probably a good idea to NOT roam roll your lower back. Upper back/shoulders is OK.</p>