Vacuum Insulation: The double-wall and vacuum insulation technology, keep cold for up to 24 hours, and hot for up to 12 hours. You can enjoy your favorite hot and cold drinks for a long time 2 Lids: The stainless steel water bottles come with 2 leak proof handle lids (straw lid and wide mouth lid), safe and easy to carry Superior Material: is metal water bottle is made of high-quality 18/8 food-grade stainless steel. Durable and food-safe, could be used for a long period of time User-friendly Design: With powder-coat technology, your insulated water bottles are easy for gripping, cleaning and water-filling Widely Use: Suitable for outdoor sports, gym, running, camping, climbing, hiking and other activities. You can take it with you when you go to work, travel, do yoga, class, have a picnic.