The Frio Insulin Pen Wallet Cooler in blue is a specialized storage solution designed to keep up to 5 insulin pens at a safe temperature. This cooling wallet helps maintain insulin efficacy through evaporative cooling technology. Key features: • Holds up to 5 insulin pens • Blue color design • Evaporative cooling technology • Portable and lightweight • Reusable design • No refrigeration or ice needed The Frio cooling wallet uses evaporative cooling to keep insulin at safe temperatures. Simply activate by soaking in water - the special crystals in the wallet absorb water and provide cooling for several days. The outer cover protects against excess moisture while allowing evaporation to maintain the cooling effect. Ideal for travel and daily use to protect insulin from temperature damage.