Califone Bright Red Better Hearing Protector is featured with adjustable ear cups full size dielectric comfortable head band and easy clean APS plastic. ABS plastic ear cups hold up to continued usage in high-use settings. It is designed to be worn while in industrial arts areas factories or other loud areas. Hearing protector is designed to block out potentially damaging external noises by completely covering the outer ear. Protector comes with rugged polypropylene head strap and adjustable headband. The ear cup shape is planned to completely cover the ears of young adults and adults for maximum protection.HS-series Hearing Protector: User Manual Includes1 Pair of Hearing Protector Ear Muffs