overview: Portable It weighs not much and can be retracted after use, it is very easy to store and will not take up much space, also, it is convenient for you to carry with you to wherever you like for your use. Great massager It will give you micro-projectile touches of suitable pain, making you feel comfortable and driving away your tiredness. Durable This product has strong durability and strength with high withstanding force and will last for a long period for your usage. Specification: Material: EVA + ABS + Electronic component Size: length 30cm, diameter 8cm Weight: 0.9kg Package Content: 1 x Yoga column 1 x USB cable 1 x Manual