Made for IceFlow 20&30oz — Please Check Your Lid Threads: Designed specifically for Stanley IceFlow 30oz tumblers. Before buying, check the inner threads at the top of your cup. Our lid only fits the standard dual-groove thread design. If your cup has the newer single-track or uneven thread style (like the example shown), it will not match. Safe & Durable Materials: Made from high-quality BPA-free plastic and food-grade silicone, durable, odor-free, and safe for daily use. Reusable design helps reduce waste while keeping your hydration healthy and eco-friendly. Spill-Resistant Flip Design: Features an innovative flip-top design with tight sealing. Simply press to close and block water flow, preventing leaks, splashes, or messy spills during travel, workouts, or outdoor activities. Convenient & Portable: Each lid includes a built-in sturdy handle, making your Stanley tumbler easier to carry on the go. Perfect for commuting, gym, camping, or school—hydration has never been so effortless. Complete Replacement Set: Each pack includes 2 replacement lids, 2 reusable straws, and 2 cleaning brushes, offering a practical and cost-effective solution. Keep your tumbler fresh, clean, and ready for everyday adventures. Made for IceFlow 20&30oz — Please Check Your Lid Threads: Designed specifically for Stanley IceFlow 30oz tumblers. Before buying, check the inner threads at the top of your cup. Our lid only fits the standard dual-groove thread design. If your cup has the newer single-track or uneven thread style (like the example shown), it will not match.