Sunglasses 1: Comfort and Protection
Sunglasses. Comfort from level of darkness, tint color and polarization. Protection from Ultra-Violet. How polarized and photo-chromic lenses work. Field trip to the beach with different lenses.
Видео Sunglasses 1: Comfort and Protection канала Craig Blackwell
Видео Sunglasses 1: Comfort and Protection канала Craig Blackwell
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