Be environmentally friendly with the Dell Pro 17 (PO1720P) backpack made in a greener dyeing process that produces 90% less waste water, 62% less CO2 and 29% less energy than traditional dyeing processes. In addition, the EVA foam lining provides impact resistance and an easy way to protect your notebook. The notebook and office accessories will stay dry thanks to the backpack, which is covered with waterproof material made from recycled car windscreens.