Double Wall Vacuum Insulated. Keeps Hot for 12 hours, Cool for 24. Unlike other leading brands, [proof] products are built using high-grade 316 Medical Grade Steel, ensuring superior corrosion resistance and durability. Our products utilize EcoProof(TM) technology, a non-toxic insulation technique that incorporates safe materials throughout the production process, eliminating copper coatings, contaminants, and other hidden insulating elements. Everything is BPA Free, reflecting [proof]’s commitment to your health and the environment.
Product Highlights
- Double Wall Vacuum Insulation for temperature control
- Includes a bonus lid for versatile usage, sip or pour
- Crafted with high-quality 316 Medical Grade Steel for enhanced durability
- Wide mouth lid accommodates ice cubes easily
- Maintains drink temperature: Cool for 24 Hours/ Hot for 12 Hours
- BPA Free, ensuring safe consumption



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