Officially Licensed University of Oklahoma Boomer Sooner OU Square Crystal Studded Pendant Necklace OU Center Logo w/Clear Crystal Studded Surround, Square Pendant Measures 1.1" L x 0.9" W. Necklace is 18" Long w/Lobster Claw Closure. Officially Licensed Product. MADE IN THE USA. Arrives in Gift Box! See our Storefront for our coordinating OU Earrings, Ring & Cuff Bracelet !