The Proteam Sierra backpack vacuum cleaner is one of the easiest vacuums to carry around for it weighs no more than ten pounds and its dimensions are small. Therefore, the user does not have to waste any energy on pulling or pushing it around the house as it is the case with other vacuum cleaners. The mountaineering-style design also weighs heavily from this point of view. However, the filtration abilities and power of this vacuum cleaner show just how irrelevant the size of a vacuum cleaner can be if it is designed properly. The Proteam ProTeam Sierra use disposable bags.