ProActive Sports Martini Golf Mini Shaker with 3-1/4" Durable Plastic Tees 12-Pack of Assorted Colors Virtually unbreakable Longer, straighter drives proven by independent testing Tee leans forward for lower resistance 12 Pack of 3  tees of assorted colors that come in a mini martini shaker Made in the USA; Conforms to USGA Rules of Golf