Bolle DUO Safety Goggles Low profile. Equalizer technology removes moisture from between the front and back lenses while balancing the inner goggle temperature and pressure with the outside environment to eliminate lens fogging. -plastic rubber frame features closed cell foam. Strap is adjustable. Indirect lower vents Pack of 1 WARNING: This product can expose you to Bisphenol A, a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov - Bisphenol A (BPA)