As one of its daily deals, PricePlunge offers the Thermapak 12" HeatShift CoolGuard Netbook Sleeve, model no. HSN10A, for $4.99. Coupon code "SPRING5" cuts it to $4.74. With $2.99 for shipping, that's the lowest total price we could find by $2. This sleeve cools your netbook while you work and when it's in storage. Deal ends today.