Feature: 1. Physical heat dissipation: By raising the notebook computer to enhance the air circulation at the bottom, reduce the temperature of the notebook computer, and achieve the purpose of heat dissipation. 2. Portable and Wide Application: Spherical design, light weight and easy to carry. Automatic magnetic suction design, more convenient storage, suitable for tablets and laptops above 11 inches to 17 inches. Can be used anywhere in the cafe, home, office, library, hotel and on the go. Description: Product Name: Holder Set Color: green, black, white Material: Silicone, Rubber Product weight: 62 grams Packing list: Large Holder (4.2x3.3x4.2cm) x 2 Small Holder (1.9x1.5x1.9cm) x 2 Colorful Box Packing x 1 Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.