DyeTrans® Hugger for the wildly popular YETI® Rambler Colster™. 4.5"� x 4.0625"�, 2 Sided, Neoprene. White outer surface adhered to inner sublimation Neoprene™ rubber beverage insulator. A good idea is to bundle these with matching printed tote bags, hats or flags - decorated for events (sold separately). Note: use of these insulators does not void the Yeti® warranty.