ArlyBaba Case Cover for Macbook Pro 13.3 inch (Retina) , with Keyboard Protective Film US National Flag Case Design No effect to your Macbook and easy installation. Protect your laptop against dust and moisture. Extremely light-weigh and durable for using. The bottom shell is translucent except black and have heat-dissipation hole. Material: rubberized plastic, rubber, frosted, translucent, feel softer when touching it.