1. Material: bamboo and wood 2. Function: heat dissipation, storage, fixation 3. Features: durable, computer universal, smooth and burr-free 4. Weight: small size: about 350g, medium size: about 400g, large size: about 450g 5. Size: small size: 15 x 8.5 x 2 cm, medium size: 21 x 12 x 2 cm, large size: 25 x 14.5 x 2 cm
