Premium BPA-free stainless steel vacuum flask with double-wall insulation for maximum temperature retention. Crafted with high-grade 18/8 stainless steel, ensuring durability and rust resistance. Innovative flip-top lid design for effortless one-handed operation and leak-proof performance. Sleek matte finish with laser-engraved customization options for corporate branding or personal style. Ideal for outdoor adventures, office use, or as an eco-conscious alternative to disposable bottles. Advanced vacuum sealing technology maintains drinks hot for 12 hours or cold for 24 hours. Ergonomic contoured shape fits standard cup holders. Dishwasher-safe construction with odor-resistant interior. Wholesale-friendly packaging with bulk order discounts available.