The Round Buttom Drum Liners are vacuum-formed and manufactured without the use of any seams. They practically help in eliminating unnecessary waste, as nothing is stuck in the pleats, corners or at the bottom most part of the bag. They are a perfect choice for conveniently storing pastes or powders. These type of liners are made for easy installing and can be easily twisted and attached to secure the contents inside of the bag. In addition, the cylindrically shaped bottom of the Round Buttom Drum Liners can fit contours from a 5 gallon bucket to a 55 gallon drum, conveniently.