Earmuffs have 3 major benefits: 1. Ear protection. The earmuff tip is made of soft, flexible plastic designed to protect the child's delicate eardrum. 2. Probe protection. The ear contacts the earmuff, not the probe, reducing direct contact during cleaning and helping extend the life of the ear thermometer. 3. Hygiene. Using individual earmuffs for different users helps reduce the risk of cross-contamination. Each earmuff can be used up to 10 times. However, for personal hygiene reasons, it is recommended to replace earmuffs regularly, similar to replacing a toothbrush. It is advisable to keep 1-2 extra boxes on hand as earmuffs do not have an expiration date. This product is compatible with Braun ear thermometers. Includes 20 disposable earmuffs in carton packaging. Compatible models: IRT1020, IRT2020, IRT2520, IRT3020, IRT3520, IRT4020, IRT4520, Pro4000, Pro6000, 6500, 6020, 6520. Specifications: Net weight: 15g Dimensions: 7.6 x 3 x 2.8 cm Color: Transparent Package Included: 1 box * 20-pack disposable thermometer covers