Made in EVA material， non-toxic and tasteless Lustrous surface， light weight and full of buffer stretch Can help yoga exerciser complete various balance action Can eliminate muscular tension and strengthen muscle power， and improve body balance and harmony ability Name: hollow wolf teeth shape foam roller Brand: kylin sport Color: black Material: high density EVA Length: about 34 cm Exterior diameter: about 14.5 cm Interior diameter: about 12 cm Features: 1 Grid foam roller， there are massage points on the surface 2 Appropriate size， easy to carry Package:1 x Foam roller