Weight:40g Material:Silicon Color:red,black This four semi-circular balls can bacome a small ball The ball is very nice and easy for you to carry wherever you go The diameter of the big ball is 4 cm and the small one is 2.8 cm Reasonable space to ensure support from the base of the laptop ventilation diffuser The material of this ball is silicon which can let the macbook is smooth support from the firm Package included: 4*Semi-circular Ball More detail:
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