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The face mask earloop is the most important component in the face mask with earloop, which helps the medical workers to wear the face mask properly. Generally speaking, the ear strap cord for adult masks is generally 17 cm, and the ear strap cord for children's masks is generally 15 cm. Three types of face mask earloop surgical are available in Horizon: hollow earloop for the mask, flat earloop for the mask, and solid earloop for the mask. They are made of 70% nylon and 30% spandex.