Rust-Proof Stainless Steel 40oz Handle Tumbler for Library Study

Rust-Proof Stainless Steel 40oz Handle Tumbler for Library Study. Premium 304 Stainless Steel: Constructed from food-grade 304 stainless steel, ensuring corrosion resistance and odor-free performance. 2-in-1 Dual Compartment Design: Features a main mixing chamber and a sealed storage compartment for powder or snacks. Effortless Mixing Mechanism: Built-in agitator breaks down clumps instantly for smooth shakes without electric mixers. Leakproof & Portable: Secure flip-top or screw-top lid with silicone sealing prevents spills in bags or cup holders. Full Customization Available: Supports OEM/ODM with custom logos, colors, sizes, and designs from samples or drawings. Durable & Rust Resistant: Resists odors, stains, and rust while maintaining a sleek, premium appearance. Multiple Capacity Options: Available in various sizes including 500ML, 650ML, 700ML, and 739ML with dual scales. Versatile Usage Scenarios: Ideal for gym training, outdoor adventures, office nutrition, and active travel.