Brand new, unused. This is a replacement cap for Hydro Flask's wide-mouth bottles. I accidentally bought the wrong one, so I'm putting it up for sale. ○ Authentic, brand new, and unused. You can open the drinking spout by twisting the top of the cap while it's attached to the bottle. The main body can be disassembled for cleaning, so you can keep it sanitary. It comes with a strap for convenient carrying. ***Size*** Diameter: Approximately 5.8cm Height: Approximately 3.3cm Hydro Flask Hydro Flask Wide Mouth Type Flex Sip Lid Black Retail Price: ¥2,090