The H15 SI is KUBORAUM's H-Series in silver metal at hexagonal geometric scale. The frame is an angular hexagonal shape - flat top edge, sloped sides drawing down to the bridge - with a double horizontal cross-bar visible at the upper rim. Small white pearl bead accents sit at the temple hinges as a quiet ornamental detail. Acetate at the temple ends for ear contact.

Clear demo lenses ship with the frame, replaceable with prescription at any optician. Lens width fifty-six millimetres, narrow fifteen-millimetre bridge, temples one hundred and forty millimetres. The H15 reads as optical first - a geometric frame designed to hold prescription lenses without losing architectural intent.