Sunglasses Julbo Ultimate Cover – matte dark blue frame, Reactiv Performance 2-4 lens

Julbo Ultimate Cover in matte dark blue frame with Reactiv Performance 2-4 lens is a performance-oriented sport sunglass built for variable light conditions. The wraparound design provides extended side protection and a secure fit for dynamic outdoor activities. The Reactiv Performance photochromic lens automatically adapts between category 2 and 4 depending on light intensity, enabling use in mixed mountain and low-light environments without frequent lens changes.

Advantages

The wraparound frame offers broad coverage and stability during movement while the lightweight construction reduces fatigue on long outings. The Reactiv Performance 2-4 lens gives fast photochromic response across a wide range of light levels, ensuring clear vision in transitions from shaded trails to bright alpine exposure. Interchangeability of lenses and a shape designed for helmets and caps increase versatility for multi-sport use.

Suitable for

• Hiking and trekking in mixed light
• Trail running and fast approaches
• Alpine approaches and glacier forefields with changing sun exposure
• Everyday outdoor activities requiring variable sun protection

Key specifications

• Frame finish: matte dark blue
• Lens type: Reactiv Performance photochromic
• Light category range: variable category 2–4
• Design: wraparound for extended side protection
• Fit: secure sport fit suitable with helmets and caps
• Use environment: mixed light and high-intensity outdoor activities

How to use

Wear the sunglasses so the frame rests comfortably on the nose and temples, ensuring the wraparound shape shields eyes from direct and peripheral glare. Allow the photochromic lens time to adapt when moving between shaded and bright environments—adaptation time varies with temperature and light intensity. For lens changes follow the manufacturer’s instructions to swap lenses securely and avoid touching the inner surfaces to maintain optical clarity.

Usage recommendations

Use these sunglasses for activities where rapid changes in brightness occur. Clean lenses with a soft microfiber cloth and mild lens cleaner. Store in a protective case when not in use to preserve frame finish and lens performance.