It's good bag with optical USB wired mouse and no batteries :). Optical mouse itself goes around 6-7 pounds.
Compact and lightweight storagePadded interior to protect your netbook. Extra compartments to store your iPod, MP3 player, PDA, power supply, etc. High strength fabric for heavy duty useDual metal zippers and Velcro fastenersDurable carry handle and adjustable shoulder-strap to ensure comfortable carrying. Micro sized optical mouse; easy to take with you. Fully compatible with all netbooks, with both Windows and Linux. Just plug-in and start, no software needed. Suitable for right and left handed users
Good reviews for this bag and one of the comment it say's it can actually take 10.2" netbook as well.