Stay hydrated while diving into your next literary adventure with the Booktrovert 40oz DuoLid Tumbler! This stainless steel tumbler features a book and reading themed design, perfect for book lovers. And with a 40oz capacity, you can sip on your favorite beverage for hours of uninterrupted reading (or binge-reading). Cheers to staying hydrated and becoming the ultimate booktrovert! This tumbler includes our newest DuoLid! which includes the following features: ✅ Built it flip straw and sipping compartment. ✅ 100% Leak Proof Seal ✅ Ambidextrous Lid.  ✅ Built in keychain loop.    Tumbler Features: 🥤 Silicone bottom for extra grip and padding. 🧊 Holds Ice for 30 hours 🥶 Keeps liquids cold for 8 hours 🌡️ Keeps liquids hot for 4 hours 🎁 Themed gift box included 🧽 Dish washer safe, hand wash recommended