Diameter:34 or 36 CM Material: Elasticity fiberglass inside & EVA foam cover with ABS handle Color: Grey, Black, Red or others Net weight: 0.8-1.0 KGS/PC Package: 1PC/color box, 10pcs/brown cartonCarton Size: 42*42*63 CM Professional Muscles ShaperTone and shape muscles with lower-impact, isometric exercise.Excellent, portable, easy-to-use unit works neck, upper back, biceps, inner / outer thighs ...