The Z18 BMS is KUBORAUM's Z-Series in compact rectangular metal architecture. Black Matt finish on the metal frame body, with acetate temple tips at the ear curve. Forty-eight-millimetre rectangular lenses sit inside thin metal rims - a quiet frame compared to the brand's larger architectural masks.
The differentiator is the lens choice: 24H Light Orange. This is not photochromic; it is a deliberate all-day amber tint that warms the visual field by a quarter-stop. In direct sunlight, the orange neutralises the blue end of the spectrum without going dark; in shade, the world reads as evening. Bridge twenty-two millimetres, temples one hundred and forty.