Photochromic Split-Frame Shield Sports Sunglasses – Black / Clear-to-Gray Lens

Lightweight performance sports sunglasses designed for cycling, running, hiking, trail riding, training, and other outdoor activities. The oversized cylindrical shield provides wide coverage and an open field of view, while the split-frame construction maintains a lightweight, streamlined profile.
The photochromic clear-to-gray lens automatically adjusts its tint as lighting conditions change, making the eyewear suitable for a broad range of outdoor environments. Adjustable nose pads and non-slip temple contact areas help maintain a comfortable and stable fit during active movement.

Specifications

Product Type: Performance Sports Sunglasses
Style: Split-Frame / Panoramic Shield
Gender: Unisex Adult
Fit: Medium to Large
Coverage: Large
Frame Color: Black
Lens Color: Clear to Gray
Lens Type: Photochromic
Lens Design: Single-Piece Cylindrical Shield
Lens Material: Polycarbonate
Frame Material: High-Impact TR90 Nylon
Visible Light Transmission: 20–85%
Lens Curvature: Base 5
Lens Width: 139 mm / 5.47 in
Lens Height: 60 mm / 2.36 in
Temple Length: 125 mm / 4.92 in
Overall Frame Width: 150 mm / 5.91 in
Nose Bridge Width: 17 mm / 0.67 in
Product Weight: 26.2 g / 0.92 oz
Frame Construction: Semi-Rimless Split Frame
Nose Piece: Two-Position Adjustable Non-Slip Nose Pads
Temple Grip: Non-Slip Soft-Grip Contact Areas
Hinge Type: Auto-Lock Folding Hinges
Lens System: Interchangeable
Wrap Style: Slight Wraparound
Size: Medium–Large Adult
Recommended Use: Cycling, running, hiking, MTB, gravel riding, training and general outdoor recreation
Quantity: 1 Pair
Smith lists the model at 139 mm lens width, 60 mm lens height and 125 mm temple length, while an independent performance test measured the eyewear at 26.2 g.

Key Features

Wide panoramic shield provides extensive forward and peripheral coverage
Photochromic lens changes from lighter to darker tint according to available light
20–85% visible-light-transmission range
Lightweight split-frame construction
High-impact-resistant TR90 nylon frame
Base 5 cylindrical lens geometry
Interchangeable lens construction
Two-position adjustable nose pads
Non-slip temple contact areas for increased stability
Auto-lock hinges help keep the temples open when putting the glasses on
Streamlined profile suitable for use with many cycling helmets
Designed for cycling, running, trail riding and other active outdoor use
Lens & UV Information
The photochromic lens is designed to react to changing light conditions, transitioning between a relatively clear appearance and a darker gray tint. The model is listed with 100% UV protection and a polycarbonate lens construction. It is not listed as polarized in this configuration.

Included Components

1 × Sports sunglasses
1 × Photochromic clear-to-gray shield lens installed
1 × Additional clear interchangeable lens
1 × Protective performance case
1 × Microfiber storage bag

The additional clear lens, protective case and microfiber bag are part of the manufacturer's listed package for the Shift Split MAG.

Care Instructions

Rinse dust and debris from the lens with clean lukewarm water before wiping. Clean and dry using a soft microfiber lens cloth. Avoid paper towels, abrasive materials, household cleaners, solvents, alcohol-based chemicals, and excessive heat. Store the sunglasses in the protective case when not in use.

Important Use Information

These sunglasses are intended for sports, recreational activities, and general outdoor sun protection. They are not industrial safety eyewear and should not replace certified occupational eye protection. Do not use for direct observation of the sun. Photochromic lens response may vary depending on UV exposure, temperature, and environmental conditions. Brand-specific technologies and specifications should only be retained in the listing when the item is confirmed to be the genuine corresponding model.