: This is a heavy-duty, high-coverage shield frame featuring Heat Wave Visual's signature "Ultra Black" tint that dials visible light transmission down to 6%. It meets Z87+ mass-impact safety standards out of the box with side shield coverage. Locs Oversized One-Piece Shield Sunglasses Go to product viewer dialog for this item.
If you require certified Category 4 darkness but are open to standard two-lens frames, consider classic leather-shielded glacier glasses: one piece sunglasses products for sale - eBay darkest sunglasses you can buy
🏔️ Traditional Category 4 Glacier Glasses (Non-Shields) : This is a heavy-duty, high-coverage shield frame