3M Peltor Optime 95 Folding Earmuffs H6F/V, Over-the-Head 

• Folding - Cups fold up into the headband for compact storage
• For noise levels up to 95 dBA
• Stainless steel construction resists bending and warping.
• Earcup pivot points tilt for optimum comfort and efficiency.
• Noise Reduction Rating (NRR): 21 dB. CSA Class B