The bottom of the vacuum has four swivel castor wheels to allow complete maneuverability. Meaning that the air must journey around the motor to exhaust out the back. This is less efficient than the canister motor. This makes the belt almost unbreakable. The brushes are natural fiber, and will comb through even the thickest carpet. The canister vacuum itself is a sleek design allowing for ease of use around corners. This is why canister vacuum cleaners have more suction. The Riccar Pristine model has a very quiet motor, and can actually be adjusted to vary the suction power. I hope this review served you. Where the Riccar Pristine shows valid benefits is in the power nozzle, the part that has the revolving brush, and sweeps the carpet. The power nozzle will automatically adjust to any thickness of carpet, but has adjustments in case the carpet is unusually thick, or the user finds the power nozzle difficult to push or pull. The canister vacuum motor is a Flow-Through motor, meaning that the air travels in a straight line through the moror and then out the exhaust. The bottom is also polished to allow a smooth exterior. Because the brush bristles are straight, pet hair tends to not get trapped in the roller brush. The canister vacuum cleaners also commonly have a quieter motor, due to the sound insulation around the motor. This vacuum cleaner is a favorite with our consumers. Eco-friendly polyester yarns manufacturers It should be noted that there are upright vacuum cleaners that in fact use a canister style motor. The roller brush itself is stainless steel including sealed ball bearings on each end of the roller. The belt that drives the roller brush is imbeded with steel cables, much like radial tires. The bumper is rubber and completely surrounds the vacuum.The benefit of a canister vacuum with a carpet nozzle is that the motor in the canister vacuum is more powerful than the motor in an upright vacuum cleaner. Upright vacuum cleaners make use of a bypass motor. The entire machine is covered with a 2 year warranty, with a seven year warranty on the motor. I would propose buying from a local merchant in your neighborhood who can honor the warranty. With even the thickest shag carpet, the Pristine will roll without difficulty across the carpet. The extension wands are metal and will extend or shorten to suite any user. The Riccar uprights almost exclusively use this type of motor too. The power nozzle has a thick rubber bumper that protects it against bumps and bruises.