What a great accessory for your wide mouth Nalgene bottle. Made of plastic. Clear Mango Orange in color. Just open the lid to your wide mouth nalgene and pop it in. No more mess down the front of you while hiking, walking, or just in the car. Lid can be closed with splashguard still in. Original Splashguard by Guyot Designs. The second drinking opening has been removed, and they added a large drainage hole and improved the fit into Nalgene bottles. This SplashGuard fits most wide-mouth bottles on the market, but it doesn't work well with some newer bottles.