Top and strap for Eco Vessel Boulder style bottles and will also fit the Summit, Boss, and Perks, as well as the kids Scouts and Frosts bottles to give you added value and versatility. If there is a date of 2013 or older on the bottom of your bottle, the tops may not fit. If you need this top as a replacement for a Boulder top, please check the photo to see if it looks like your current top.Read more
The top measures 2 inches tall and 2.75 inches in diameter. The top and strap come as one piece and is sold as a unit. The first time you use this top, please screw down tightly, so it will form a tight seal.