You know those drive up tellers outside of banks? Apparently, they work with pneumatic tubes. I didn't know what that meant, but this chart describes how they work. I love learning something new every day!
Notre Dame Irish Cornhole Board Set is designed with a shamrock on the surface and is sure to be the life of any tailgate party this football season. May the luck o' the Irish bring you a win! http://www.cornholeboardgame.com/school-flags-notre-dame-irish-cornhole-set-p-50.html