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- 100% MEDICAL GRADE STEEL LINERS: [proof] bottles are made from super high-quality 316 Medical Grade Stainless Steel (also called ‘Surgical Stainless Steel’), the highest quality steel available on the market. This means a water bottle that will last far longer since it is more corrosion resistant than other bottles on the market that use a lower quality 18/8 or 304 grade steel.
- 18oz DOUBLE-WALL INSULATED: [proof] bottles are 100% vacuum insulated which means they are sweat-free and will keep your keep your beverages COLD for up to 24 hours and HOT for up to 12 hours.
- 100% BPA FREE & 100% COPPER FREE: [proof] bottles are copper-free and use EcoProof technology to ensure maximum insulation. Unlike other leading brands, we don’t use hidden copper insulating elements in our bottles. And of course, everything is BPA FREE.
- SUSTAINABLE DESIGN: The wide neck is designed to accommodate ice-cubes and the base of the bottle fits perfectly into most cup-holders. The lid is 100% leak-proof and works great on-the-go to the office or to school. Fits great in a bag, backpack or a purse. The surface is powder coated, providing a durable and textured surface that feels of quality. The logo is laser engraved on the bottle. NOTE– [proof] bottles are designed to be washed by hand only.
- 1 YEAR MANUFACTURER’S WARRANTY: [proof] stands behind our quality and ensures our products are made with the highest level of precision and craftsmanship. We are happy to replace any products or issue a full refund if you’re not 100% satisfied with your product.
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