The Yeti Rambler Mag Dock Cap is a black screw-on lid designed to fit all Rambler bottles, featuring BPA-free plastic construction for durability and safety. Made by the popular brand Yeti, this cap is a convenient accessory for water bottles, perfect for outdoor activities like camping and hiking. The BPA-free material ensures that the cap is safe for use with your favorite water bottles. Made in Malaysia, this cap is a reliable and high-quality option for those looking to personalize their water bottle experience.