Smj massage set black and orange YG025 Properties: SJM muscle massage set It is suitable for people who want to relax and speed up muscle regeneration after training. the set includes a roller for massaging larger surfaces, a ball for selective massage and a double ball for massaging parallel muscle groups Technical data: material: EPP dimensions: roller: length 33 cm, diameter 14 cm; ball: diameter 8 cm; double ball: length 16 cm, diameter 8 cm