This tobacco pipe wind cap is a great way to enjoy a bowl outside. Simply press the tabs on the sides of the cap and place it on the top of your pipe to form a pressure fit on the inside of the tobacco chamber. This sturdy tool is a perfect complement to windy days on a hike or when you're relegated to the front (or back) porch to enjoy your pipe. These also are really handy for truck drivers who want to have several pipes ready for a long drive. One size fits most.