The Rubbermaid twisted loop blend dust mop has a blend of post-industrial 4-ply cotton and synthetic fibers for better dust retention, durability, and launderability than traditional cotton dust mops, and is made with twisted loops that resist snagging and provide better dust retention and coverage than regular looped-end or cut-end dust mops. This mop head can help earn Leadership in Energy and Environmental Design (LEED) credits. It has a polyester backing sleeve that fits a standard or breakdown-style dust mop frame (sold separately). This mop head is pre-laundered to reduce shrinkage, and is suitable for commercial and industrial applications. Dust mops (also called dry mops) consist of a mop head, a mop frame, and a handle. A mop head is sometimes tied on to a mop frame with connected strings, or it has a sleeve that the frame fits into. The frame provides support for the shape of the mop head, which consists of dust-collecting yarns and a flexible backing to hold the yarns together and connect to the frame. Dust mop heads have traditionally been made of cotton, and used with an oil- or water-based chemical treatment to improve dust retention. Synthetic fibers build a positive electrostatic charge from friction that attracts and retains dust so that no treatment is needed. Also, synthetic fibers withstand laundering better and dry faster, which leads to a longer product lifespan when synthetics are blended with cotton because harmful bacteria grow in a damp mop. The handle is a separate item that connects to the frame. Often either the frame or the handle also includes a swivel joint for flexible maneuverability. Rubbermaid manufactures cleaning, organizing, and material handling products for commercial, medical, and industrial applications. The company, founded in 1933, is headquartered in Huntersville, NC.