The RumbleRoller Foam Roller is not your standard foam roller. Designed with bumps that target deep-tissue and move around bones, this foam roller reaches places and muscles its counterparts cannot. Plus, the durable EVA/polyolefin construction provides firm flexibility that can stand the wear and tear of long-term use. Use a rolling motion to knead and stretch your muscles, or switch to a rocking motion from side-to-side to further target problem areas. This foam roller comes in three sizes and two firmness levels so you can choose which roller is right for you (or get a second roller for travel). Experience the deep relief of a deep, at-home massage with the RumbleRoller Foam Roller.Features:Specs Lengths: Material: EVA/polyolefin blend