Lenovo Casual Backpack B200-Darker charcoal. The Lenovo Backpack B200 is designed to fit notebooks up to 15.6”. With a durable, weather-resistant polyester fabric, your gear will be safe, and dry for that matter, during even the craziest of days. A multi-pocket, padded main compartment and a front zipped pocket give you an abundance of storage options for all your accessories. To top it off, the B200 features a padded back panel paired with adjustable shoulder straps making it a joy to carry.