Michigan Wolverines Colosseum Friends Short Sleeve Polo Shirt. This mens Wolverines polo is made of 89% polyester/11% Spandex. The Michigan Wolverines logo is a rubberized print that is meant to last season after season. This unique Michigan Wolverines shirt features a unique lightweight training polyester. The polo has a three button placket and is made of a machine washable material that will last for many seasons. This Michigan shirt is perfect to show your Wolverines colors on game day, on the green or anywhere you want to show your team pride! Go Blue!! Officially licensed Michigan Wolverines fan gear.