Califone HS40 Hearing Safe Hearing Protector, Rugged Polypropylene Headstrap, Adjustable Headband, ABS Plastic Earcups Designed for High-use Settings, Bright Red Safety Color, Pack of 12 Quantity: Twelve Hearing protector blocks out external noises Smaller earcups designed to completely cover the ears of younger students Rugged polypropylene headstrap and ABS plastic earcups hold up to continued usage in high-use settin Adjustable headband fits students of all sizes