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These leak-proof lids are made of lightweight, durable plastic, provide a good seal, are safe for use with your cups, and are dishwasher safe.
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Specifications: Color: White/Lake Blue（Transparent Main Body）; Material: Plastic; Lid opening Diameter: 9.1cm / 3.58 Inch; Total Diameter: 9.94 cm / 3.91 Inch; Total Height: 4 cm / 1.57 Inch; Package Includes: 2 Pcs x Plastic Lids
Leak-proof design: The replacement lid features a great quality sealing design, with a sealing silicone O-ring and an open design to effectively prevent liquid spills and splashes.
The lid's excellent airtightness keeps beverages at low or high temperatures.
Easy to use: Simply slide the button to easily replace the lid, allowing you to choose between drinking directly or using a straw. This lid works perfectly with the Stanley 40oz insulated mug, easily replacing the original lid without replacing the entire mug.
Versatile: Great for home, office, travel, or outdoor activities such as picnics. It effectively prevents spills and dust from getting in, making it perfect for carrying coffee, tea, or other beverages. Note: To avoid purchasing an incorrectly sized lid, please measure the inner and outer diameters of your cup before purchasing.