NWT. Never been opened, still sealed. Cosmic Lilac Trio color pack. Add a bright detail to any Yeti Rambler with one easy switch. Count: 3. These pop-on, pop-off magnets are dishwasher-safe, and easy to pair with any rambler color. This is also an easy way to identify your drink at a party. The Yeti MagSlider lids are a popular accessory that allow customers to customize the appearance of their drinkware.