... 830grams,soft and durable material....... This laptop cooling bag uses a macromolecular compound for the absorbtion of ... .Using tips:place a laptop directly on this bag,the pad will absorb large amount of heat ... dissipate it's own heat output.the laptop cooling bag permit 3 ~ 8 hours of using time, ... Novel and fashion ,suitable for office ,SOHO, outdoor leisure,it is the best companion of laptop 10. The ...