1.Premium Quality MaterialDense foam rubber EVA material combined with thick PVC ,durable and long-lasting, safe non-toxic, washable, environmental friendly.2.Unique DesignErgonomically designed with convex curves with reflexology points. Help increase blood flow, alleviate knotted muscles & tension. Use for deep tissue massage, physical therapy, myofascial release, trigger point release, yoga assistance and foot reflexology.3.Multi-function Massage ToolFoot Roller is Ideal for massaging all areas of the foot, Heel, arches toes. Relieve a range of foot ailments including plantar fasciitis. Spiky Ball can be used for all body parts including feet, back, neck, legs, hands, arms, glutes, hamstrings, thighs, chest & much more!4.Compact and LightFoot Massage Roller: 6.3 x 3 inches, 6 oz, Spiky Ball: 2.8 inches, 2.5 oz. Extremely compact and light, yet large enough for any size foot. Bring it anywhere and relieve your feet anytime!5.3 Piece Set!Includes 1 Pc Foot Massage Roller, 2 Pcs Spiky Balls and Convenient Storage Bag.