Check the listing for details. 3M E-A-R Caps Model 200 Hearing Protector 17dB (#321-2101) Ear Plugs w/ band. Condition: New. Listed at 12.75 USD. The 3M™ E-A-R Caps™ Hearing Protector is lightweight and is easy to put on and take off, making it an appealing option for users who need intermittent hearing protection. The flexible band is worn under the chin helping it stay clear of hard hats, headgear, and other personal protection equipment. Additionally, soft foam caps form to the shape of the ear for a comfortable fit. • Soft foam caps block the entrance to the ear-canal. Band is worn under the chin • Ideal for intermittent protection needs • Noise Reduction Rating (NRR)* 17 dB. CSA Class BL *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided. 3M is Leading the Advancement of Hearing Conservation™.