Sengu&trade; FT2300 14"-15.6" Laptop Cooler Pad With Handmade Pro-environment Slim Portable USB Powered (2Fans) Thoughtful and careful: checkered plate design, moderate height, unlimited, not sideslip. Ergonomic Design: The traditional manual craft, elaborate design,take care of health, simply adjust the angle. Ultra-Quiet Fans: Two ultra-quiet fans create a noise-free environment for you. Optimized for Laptop Carrying: Thin only 33 mm, high-quality multi-directional natural bamboo,warm in winter and cool in summer,provides your laptop with a wear-resisting and stable laptop carrying surface. Conveniently: Plug and play, no external power supply is needed, no software installation is required.