Features: Designed to help relax your muscles, ease soreness and stiffness and assist rehabilitation. The foam roller features ergonomic soft surface that making you feel comfortable while massaging your muscles. High density foam structure provides a deeper massage, and is firm enough to support all body types without losing shape after regular use. It is a versatile fitness tool for Yoga, rehabilitation exercises, stability exercise, etc. Eases tightness in muscles after high strength training for faster recovery and reduced soreness. Specification: Material: EPP Foam Model (Optional) Weight Size Color Type 01 15g/0.5oz 8cm/3.1inch Black Single Foam Ball 02 31g/1.2oz 10cm/3.9inch Black Single Foam Ball 03 109g/3.8oz 24*12cm/9.4*4.7inch Black Double Foam Ball 04 109g/3.8oz 24*12cm/9.4*4.7inch Camouflage Color Double Foam Ball 05 32g/1.1oz 16*8cm/6.3*3.1inch Black Double Foam Ball 06 32g/1.1oz 16*8cm/6.3*3.1inch Camouflage Color Double Foam Ball 07 151g/5.3oz 30*15cm/11.8*5.9inch Black Foam Roller Package List: 1 x Foam Massage Tool Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..