rooCASE Neoprene Super Bubble Sleeve Case for Acer Aspire One AO721-3574 11.6-inch (Black / Orange) Non-OEM Case for Acer Aspire One AO721-3574 11.6-inch Water Resistant Neoprene Sleeve Case. (Netbook NOT Included) Super Bubble Protective Shock Absorbing Foam Interior. Invisible Zipper Line for a Touch of Simple Elegance. Accessory Pocket for AC Adapter Charger, Mouse and e-Book.