The Spill Stopper with Straw & Cleaning Brush is a convenient accessory for Stanley cups, designed specifically for water bottles with a lid and straw. Made from silicone, this set includes a turquoise-colored spill stopper and a straw cleaning brush, perfect for outdoor activities like camping and hiking. The spill stopper helps prevent spills and messes, while the cleaning brush ensures easy maintenance of the straw. Ideal for keeping your water bottle clean and tidy during on-the-go adventures with your favorite Stanley cup.