What makes a gel pack "medical grade?"Updated a year agoMedical-grade gel packs are manufactured to the highest standards, and are designed to stay cold for much longer than a conventional ice pack — remaining below room temperature for 2-3 hours, on average, compared to less than 30 minutes for consumer-grade packs.. Medical-grade packs are also much more durable, and stay soft and malleable when cold — so they can perfectly conform to your head or body. Was this article helpful? YesNo