Description:With the new Calypso 500mL bottle, there's no excuse not to get your 2L a day. Crafted with a double-wall vacuum insulated stainless steel interior and a matte black detailed finish exterior, this bottle is sure to make the cut. Its screw top, refillable water bottles make it the eye-catching leader in taking hot or cold drinks on the go, maintaining optimum temperatures for up to 24 hours without creating any unnecessary waste. This reusable bottle doesn't just have good sleek looks, but also comes packaged in a beautiful minimalist kraft box. The Calypso is great as merchandise or a giveaway product for schools, offices, sporting events, gyms, and much more. Product Details: Material: Stainless Steel 304 0.5MM Exterior/ 0.4mm Interior