These Venipuncture Arm Warmers are easy to activate by flexing the stainless steel disc. The gel heats very fast, getting to 111 degrees Fahrenheit in less than 1 minute. This warm gel instant heat pack is flexible, allowing it to mold easily to a patient's arm. The manufacturer laminates it with nylon, making it durable. This gel heat pack is nontoxic and is usable on human skin without causing any reactions with the skin. It has two sizes, medium with 10 per pack and large with six per pack.

• Flexing the stainless steel disc activates the warm gel instant heat pack
• Laminating it with nylon makes it durable
• Gets to 111F in less than a minute