Randy's Soft Pipe Cleaners are 100% cotton and the perfect accessory to clean your pipes and vaporizers. Randy's Soft Pipe Cleaners are 100% cotton and the perfect accessory to clean your pipes and vaporizers. 100% Unbleached Cotton Tapered for easy cleaning Soft wire style for normal cleaning or for pipes that need non-abrasives Clean the hard to reach places, and when you're done cleaning they are disposable.