The stainless steel Classic 18oz water bottle is our go-to for short hikes, trips around town and a perfect big kid water bottle. Small enough to fit in a purse or backpack and easy to clip with the included BPA-free cap. The high quality single wall stainless steel construction is lightweight, perfect for hydration and keeping drinks cold in the cooler or fridge. Available with the Sport Cap 3.0 in all colors which features high flow rate and quiet "chirp" free experience. Brushed Stainless is available with our leak proof Loop Cap and all are compatible with any Klean Kanteen Classic Cap.