The Space Saver Lid is a versatile mug lid for either the anodized aluminum Space Saver Mug or stainless-steel Space Saver Cup. Made of tough, heat resistant reinforced nylon, the Space Saver Lid can double as a cook lid. The lip guard ensures safe sipping while the sippy hole doubles as a strainer. Weighs only 0.9 oz / 26 g.