EASY TO USE precut diabetic patch fits over your transmitter to secure your sensor. The easy peel, perforated paper backing is split into 2 parts, making application a breeze. For the best adhesion wait at least an hour before getting wet. The patches come in a resealable mylar bag so you can bring your patches on the go COMFORTABLE & BREATHABLE. The synthetic microfibers are flexible, fast drying and allow for moisture release which is critical for comfort and extended wearability. These fibers are anti-odor in contrast to cotton fabric alternatives. FSA + HSA Eligible NO SKIN IRRITATION. The sensor patch material is latex-free, extremely water resistant, and hypo-allergenic for all ages. With proper application and removal, never worry about itch or discomfort. Holds fast during exercise, swimming, showering, and everyday activities PROTECTS SENSORS. No more wasted sensors. Moisture-wicking fabric resists sweat, water, and humidity when applied with proper skin preparation. Patch measures 2.55" x 2.55" and is compatible with Makana Synergy and similarly sized sensors