Sinner Nirapi Mountain Sunglasses - Grey

These sunglasses are specifically designed for high-intensity mountain activities with Category 4 lenses. While they offer excellent protection, their darkness makes them unsuitable for driving or general everyday use where less extreme light filtering is required.

Category 4 lenses allow only 3-8% of visible light to pass through. They are designed for extremely bright conditions, such as high-altitude snowfields or deserts, where intense sunlight and glare are present. They are not suitable for driving.

After purchasing your sunglasses, you must register them on the SINNER website within the specified timeframe. Follow the online instructions to complete the registration process. The insurance covers theft, loss, and damage for 1 year.

The frame is constructed from a durable and lightweight bio-based material (G850), which is also nickel-free.

The product information does not specify if the lenses are replaceable. For lens-related issues or inquiries about replacement, please contact SINNER customer support directly.

Polarized lenses reduce glare from reflective surfaces like water, snow, and roads by filtering out horizontally reflected light. This provides clearer vision and reduces eye strain. Non-polarized lenses do not have this glare-reducing capability.

The Nirapi Mountain sunglasses feature an Asian fit, which is often designed to sit better on faces with a lower or wider nose bridge. The anti-slip nose pads also help to keep them securely in place.

Ensure the anti-slip nose pads and temple tips are clean. If the fit is still not secure, consider consulting an optician for potential adjustments or alternative nose pad options if available.

Category 4 lenses are designed for extremely bright conditions. For overcast or lower light, these lenses will significantly reduce visibility. It is recommended to switch to sunglasses with a different lens category for such conditions.

Visit the official SINNER website and follow the instructions for insurance registration. Ensure you have your product details and proof of purchase ready. Contact SINNER customer support if issues persist.

Use a clean microfiber cloth and ensure there are no particles on the lens or cloth that could cause smearing. If smudges persist, a mild lens cleaning solution specifically designed for eyewear may be used sparingly, followed by gentle wiping.