Abstract: The invention relates to a fastening device that prevents waste bags from sliding into the waste bins/trash. The above mentioned fixture serves as the locking of the bags through punching that provides joint function for up and down angle. Fixture design consists of an upper fastening member and a lower tillable fastening member, made of a flexible, thin, flat material, cut out or punched with slots on opposite sides for slant of the lower portion of the fastener. Slits between the upper and lower fastening member has multiple functions, both for spin 180 degrees to the lower fastening member for bag obsession, and for attaching the device closer to the curved surfaces. By the design of said device allows flexibility and slant and attachment to curved surfaces. Trough special punching and embossing in combination with a flexible, thin and flat material, reducing tension. Cited device is generally adapted for curved area shapes, but can also be attached to flat surfaces.