Accessory Accomplice Officially Licensed University of Michigan Wolverines Silvertone Crystal Studded Stretch Ring Silvertone University of Michigan Wolverines Stretch Ring. Stretch Ring, One Size Fits All. Measures 0.9" L x 0.9" W. Clear Crystal Surround. Officially Licensed Product. MADE IN THE USA. Arrives in Gift Box! See our Storefront for our Coordinating Michigan Earrings, Necklace & Cuff Bracelet!