The New Vortex Flask Green 21 Oz Stainless Steel Insulated Water Bottle with a screw-top lid is a durable and convenient water bottle perfect for outdoor activities like camping, hiking, and sports. Made with stainless steel, it is reusable, refillable, and insulated to keep your drinks cold for longer periods. The 21 fl oz volume and classic design make it a practical choice for staying hydrated on the go. With a sporty green color and a screw-on lid, this Vortex water bottle is both functional and stylish.