As one of its daily deals, B&H Photo Video offers the Vanguard Sedona 41 DSLR Backpack in several colors (Khaki Green pictured) for $49.99 with free shipping. That's $60 off and the lowest price we could find. Deal ends today. It features:

detachable camera insert

removable rain cover

security whistle

sternum & waist belts

front & side tripod attachment

front & top zip

side mesh pockets