24 oz. single wall stainless steel construction. Fill it with cold water and watch it transform to a playful color matching the silicone carrying strap. When cold water is added, the bottle will stay a solid color for 3-4 hours. It has a stainless steel twist cap with a wide mouth opening. Hand wash only. It is BPA free. Colors: blue, green, purple and black. The price includes a one-color imprint in one location. Imprint area is 5”h x 8 ¼”w.