1. Made of high borosilicate glass. <b>It’s a special glass material with low expansion rate, high temperature resistance, high strength, high hardness and high chemical stability. </b>Non-toxic, odorless, safe and reliable, easy to carry, great for indoor, outdoor travel and other activities, easy to clean and hygienic. </b><br> 2. High borosilicate glass can be more heat resistant and stable than ordinary glass. Premium high borosilicate glass water bottles can withstand the temperature sudden change of -20 ℃ ～ 120 ℃; <b>it’s not deformed, shock-proof, drop-resistant, not easy to break. </b><br> 3. The <b>sturdy lid has excellent sealing performance and doesn’t leak. Popular cap with top flip lid</b> and cover with spout. <b>Two ways to drink. Easy to open the top lid to drink with spout and straw, drink with wide mouth opening. </b><br> 4. BPA free water bottle with sleeve, <b>easy cleaning no need to take it out. The irregular wavy design of the silicone sleeve at the bottom makes it stand more stable. </b><br> <b>【P.S.】</b><br><br> ⒈ <b>Have questions, please contact us on our ORDER ID on Amazon.<br>⑴ When you receive or use it if it has broken, reach out seller, we will send you a replacement one during 3 months.<br>⑵ If the lid breaks, contact Ellen to REPLACE it.<br>⑶ If you don’t like & want it, let Ellen knows and she will help you to refund directly.<br>⒉ Don’t freeze when full, don’t drop it. <br>⒊ Don’t use in microwave oven and dishwasher. Hand Wash recommended or separate parts dishwasher safe.</b>