Closeable press-in lid Easily presses into compatible products BPA-free & dishwasher safe The Closeable Press-In Lid slides shut to tame splashes and trap temps, then slides open wide enough for easy drinking and reusable straws. The medium fits the Hydro Flask 10oz Rocks, 12oz mug, 16oz tumbler, and 22oz tumbler. The large fits the Hydro Flask 24oz mug and 32oz tumbler.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }