Unlike its larger counterparts, this roller is made of hard plastic and dense foam, which gives it lasting durability over puffier foam rollers. The compact size also makes it more portable than most while still working OK to stabilize side planks if you want it to. The best part about this roller is the firmness. It offers a varied rolling surface for different levels of massage and is firm enough to give a great massage while being cushioned enough not to hurt. If you’re looking for something smaller than your typical three-footer and are willing to spend a little bit extra, this is an excellent choice.