This Big Bellied Small Mouthed Bottle is made with a food-grade 304 stainless steel interior and 201 stainless steel exterior, polished inside and out, BPA-free, non-porous, rust-proof, scratch-resistant, and built for long-term daily use. Its multi-layer insulation technology keeps beverages hot or cold for hours, making it a reliable companion for travel, hiking, outdoor activities, school, office, gym, gifting, trade shows, company events, and more. The 17 oz capacity and multiple color options make it versatile for coffee, tea, milk, lemon water, or any drink you enjoy. Compact and easy to store, this reusable bottle helps reduce waste and is convenient to carry and clean. Custom logo printing is available to boost your brand visibility on every sip.