Give your Thermosteel flask a new life with this premium spare lid compatible with Milton Thermosteel Duo Deluxe (1700ml & 1800ml) bottles. Engineered for a perfect fit and secure sealing, this replacement cap ensures leak-proof performance and helps maintain temperature for up to 24 hours hot & cold. Made from durable, BPA-free materials, the lid is designed for everyday use—whether at home, office, travel, or outdoor adventures. Its precision threading and tight seal prevent spills and preserve your beverage’s temperature efficiently. An ideal solution for replacing damaged or lost lids, this high-quality replacement cap restores your flask’s performance and reliability. Key Features (Bullet Points): ✅ Perfect Compatibility – Fits Thermosteel Duo Deluxe 1700ml & 1800ml (Duo DLX models) 💧 Leak-Proof Seal – Prevents spills and ensures safe carrying 🔥❄️ Temperature Retention – Supports up to 24 hours hot & cold performance 🛡️ BPA-Free & Durable – Safe, sturdy material for long-lasting use 🔄 Ideal Replacement – Perfect for broken, worn-out, or missing lids Keep your Milton Thermosteel Duo Deluxe flask performing at its best with this genuine spare lid, compatible with the 1700ml and 1800ml variants. Crafted from high-quality stainless steel, this replacement cap features a distinctive ridged design that provides a secure, comfortable grip while ensuring a completely leak-proof seal. Whether you are heading to the office, gym, or on a long journey, this lid helps maintain your beverages at the ideal temperature for up to 24 hours — keeping hot drinks hot and cold drinks cold. The precision-engineered fit ensures there are no spills or leaks, making it a reliable companion for daily use. If your original lid has been lost or damaged, this authentic Milton replacement cap restores your flask to full functionality without any compromise on performance. Easy to clean and built to last, this spare lid is a practical and affordable solution to extend the life of your trusted Milton Thermosteel Duo DLX flask.

• Perfect Compatibility: Spare lid designed exclusively for Milton Thermosteel Duo DLX Flask in 1700ml and 1800ml capacities.
• Leak-Proof Design: Replacement cap ensures a secure, tight seal to prevent any spills or leakage during use.
• 24-Hour Temperature Retention: Lid supports hot and cold retention for up to 24 hours, keeping beverages at desired temperatures.
• Genuine Milton Accessory: Sourced directly from Milton, ensuring a perfect fit and long-lasting performance for your flask.
• Easy Replacement: A convenient spare cap to replace lost or damaged lids, restoring your flask to full functionality instantly.