Skateboard, roller-blades, free-ski, whatever you do this backpack will let you take your net-book, some books and other staff (in near future the problems of children carrying tons of books to school will be solved by using netbooks only) with you without making you uncomfortable. Also, the inner part works as a protector for your backbone in case of extreme falls. The outer Cevlar skin protects your staff inside the backpack. Front small protector guards your mobile phone or any other small device you use!