Targus AWE39US1 Chill Mat for Netbooks (Black) for $3.99. Shipping is free on orders over $25. If needed, use this Filler Tool to pad the order to qualify for free shipping. Here is a screenshot for your reference. The Targus Netbook Chill Mat features two fans that generate airflow to prevent overheating and plugs directly into the USB port, so no additional power is required. Most places have it for about $22.