Perfect Fit Design:The spill-proof lid is specifically designed for Stanley 40 oz Quencher H2.0 Tumbler(Not Suitable for Traveler 40 oz Flat Cups),providing versatility and convenience for Stanley enthusiasts. Leak-Proof and Splash Resistant:Our 40 oz replacement lid featuring a secure flip straw design to prevent liquid leakage.Once firmly fixed, it will ensure 100% leak-proof performance, giving you peace of mind when using and storing your water bottle. Food-grade Material:Made from food-grade material, these straw lids are durable, reusable, and easy to clean by hand or in the dishwasher. Removable and Collapsible Design: The components on the Replacement cup lid can be disassembled, making it very easy to clean and maintain, greatly extending its lifetime. Collapsible straw design, easy to open and close, you can drink anytime during sports or travel, and it can effectively prevent dust from entering the cup, allowing you to enjoy the drink with peace of mind. Comprehensive Accessory Set:The package includes 2 pack 40oz leak proof lids, 2 pieces straws,1 auxiliary disassembly tool(Random color) and 1 straw brush,perfect for replacing a lost lid or sharing with a friend or family member. Features: 1. The replacement Flip Straw lid is specifically designed for 30/40 oz Stanley Quencher H2.0 tumbler.