Hi-tec Hiona glasses Properties: HIONA sunglasses by Hi-Tec. HIONA sunglasses feature flexible, bendable frames made of TR90 grilamid. The lenses feature a UV 400 filter, which protects against harmful radiation. Polycarbonate lenses are more resistant to damage and scratches. The glasses are polarized, reducing glare. The multi-layer REVO coating improves color vision and enhances contrast. The included hard case protects the glasses from scratches and damage. A hard case for storage and transport is included. Key features: Glasses for an adult Lenses with UV 400 filter, category 2 Lenses more resistant to damage Classic style of glasses Light Technical specifications: Frames: TR90 Lenses: PC Revo coating