Sigma's EcoSupreme family of pre-stretched hand films lead the industry in overall performance and has been widely accepted as the premium film in this category. Our engineered blown master rolls, combined with a proprietary conversion process is simply the best way to manufacture than, pre-stretched films. This innovative engineering creates Dynamic Tension within the film, causing it to contract after applying to increase containment and get more products to their destination in as - made condition. This, yet strong. Ideal solution for handwrapping applications.