The sleek and sporty look of the Pasfun Evo belay glasses from YY Vertical makes them very appealing. These glasses with lightweight and durable plastic frames are equipped with BK7 prisms. Providing a wider and more comfortable view of the climber. Still made of polycarbonate and featuring Soft Touch, this pair will perfectly adapt to your belaying. Adjustable Double vision Flexible arms "High transparency" prisms YY Vertical Plasfun Evo - Belay glasses