Smith Defy Sunglasses Review

I’ve been trying out the Smith Defy sunglasses for a bit now, and I’ve got some thoughts. They are sleek, semi-rimless design and bold fast style, so I figured I’d see if they’re actually worth the hype—or just another pair of overpriced shades. Whether you’re riding, running, or just want to look like you know what you’re doing outdoors, here’s my honest take on how they’ve held up so far.

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First Impressions & Build

Featherlight design: Weighing just 28–29 g, the Defy are among the lightest partial frame sunglasses from Smith available, thanks to the semi‑rimless TR90 nylon frame—a winner for riders and runners alike.
Sleek styling: The frameless top edge and sharp temple corners create a clean, modern silhouette that blends the aggression of performance eyewear with minimalist flair .

Optics & Lenses

ChromaPop™ technology: Offers enhanced contrast and rich, vibrant colors. Available in a spectrum of tints from Bronze and Black to Rose Gold and Opal. Clarity in changing light conditions receives rave evaluations across all reviews.
Exchangeable lenses: Smith includes a bonus clear lens (retail MSRP ~$175 + spare lens), with replacements ranging $40–$80.
Durability features: Smudge- and moisture‑resistant coatings help maintain clarity, though the rimless design occasionally invites fingerprints during mid‑ride swaps

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Fit & Comfort

Secure grip: Megol-coated (rubber coating) temples and adjustable nose pads ensure a snug fit, even in aero positions. One‑handed AutoLock hinges make handling easy on the go.
Coverage & performance: Despite the slim frame, the oversized, slightly wrapped 5-base lens provides excellent protection from wind and dust. I have noticed a gap under the sunglasses that allows some wind and dust from the bottom, that also aids in preventing fogging.
Long‑haul wear: Highly comfortable up to ~3 hours. After 4–5 hr rides they can start to a feel uncomfortable.
Air flow: I’ve noticed an increased distance from my face causing air, dust and dirt under the lens, but have zero issues with fogging even on 100 degree days.

Practicality & Extras

Complete kit included: Comes with a zippered hard case, microfiber pouch with lens pocket, and sticker—covering both protection and portability.
Robust design: High‑impact resilience and flexible frame material promise longevity, while adjustable nose pads cater to different face shapes.

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Final Verdict

Who it’s for: Riders, runners, and outdoor athletes who prioritize lightweight, clear optical performance, and sleek design. Ideal for those shifting between bright and overcast conditions.

Strengths:

Ultra-light semi‑rimless frame (28–29 g)
Excellent ChromaPop™ contrast and color accuracy and enhancement
Secure, one-handed fit with Megol padding and AutoLock hinges
Generous medium coverage for protection against elements
Comprehensive kit with spare lens included

Potential drawbacks:

Lens swaps require care—nose pad removal isn’t intuitive and can break if handled roughly.
May develop mild temple discomfort on exceptionally long rides (~4+ hr).
The rimless design leads to occasional fingerprints, particularly with clear lenses.

Overall rating: ★★★★½ (9.5/10 equivalent)