Give'r Hands Free Neck Coozie Beverage Insulator - 4 Pack 100% Neoprene to keep cold drinks cold, and hot drinks hot. Great for beverages that are 32F-175F Coozie measures 4" in height, 2.5" internal diameter (at rest) expandable up to 3.5" in diameter Neck strap is 33", so top end of the coozie rests approximately 6-10" below the base of your neck Durable Neoprene is tough against wear and tear and is UV-resistant, and lightweight (1.7oz) Elastic material, soft and smooth exterior ensures comfort and flex to keep beverage upright