The Geri-Care VIVI Cap is a reusable temperature shield designed to protect insulin pens from extreme temperatures, both hot and cold, which can degrade insulin efficacy. This innovative cap safeguards insulin in both pre-filled and refillable pens, as well as some GLP-1 Receptor Agonist injections, preventing temperature-related damage. The VIVI Cap features a built-in temperature sensor with an easy-to-read indicator, providing peace of mind. It requires no maintenance, batteries, or other interventions, working reliably for years. Simply replacing the original pen cap with the VIVI Cap ensures constant protection, allowing individuals to confidently carry their insulin anywhere. This FSA/HSA eligible device promotes better insulin management and supports an active lifestyle.