Earmuffs provide three main benefits: 1. Ear protection: The earmuff tip is made of soft, elastic plastic material designed to protect the child's delicate eardrum. 2. Probe protection: The ear contacts the earmuff instead of the probe, reducing direct contact during cleaning and helping extend the life of the ear thermometer. 3. Safety: Using individual earmuffs for different users helps reduce the risk of cross-contamination. Each earmuff can be used up to 10 times. For hygiene reasons, it is recommended to replace earmuffs regularly, similar to replacing a toothbrush. Consider purchasing 1-2 additional boxes as earmuffs do not have an expiration date. This product is compatible with Braun ear thermometers, including models IRT1020, IRT2020, IRT2520, IRT3020, IRT3520, IRT4020, IRT4520, Pro4000, Pro6000, 6500, 6020, and 6520. Specifications: Net weight: 15g Dimensions: 7.6 x 3 x 2.8 cm Color: Transparent Package included: 1 box of disposable ear thermometer covers (20 pieces)