3M E-A-R Caps Blue And Yellow ABS And Polyurethane Model 200 Under Chin Banded Earplugs 3M E-A-R Caps Blue And Yellow ABS And Polyurethane Model 200 Under Chin Banded Earplugs Soft foam caps block the entrance to the earcanal. Band is worn under the chin Ideal for intermittent hearing protection needs Ideal for intermittent protection needs, worn under the chin and stored around the neck