This lens is currently out of stock but should be back in stock soon. Buying it here now means you'll get one as soon as they come in and you're virtually guaranteed to get one in the next shipment. If you wait for them to come in, you might miss the first restock and have to wait even longer.
This yellow lens is compatible with the full JT Spectra family of masks including the world-famous ProFlex. It fits the Spectra, ProFlex, Flex-7, Proflex X, Premise, Proteus and Flex 8.
The dual-pane thermal lens prevents the mask from fogging. Great for low light conditions, woods or when it is overcast.