The E-A-R™ Classic™ SuperFit™ 33 orange “fitting ring" provides a guideline for proper insertion and quick visual compliance check. Benefits •Orange "fitting ring" provides a guideline for proper insertion and quick visual compliance check. •Reusable Pillow Pack helps keep earplugs clean when they are not being worn. •Test compatible with 3M™ E-A-Rfit™ Validation System. •Noise Reduction Rating (NRR)* 33 dB. CSA Class AL.