Made in Japan.

The Nagata Speed Blade is a six base frame with a classic aviator shape designed to protect the eyes and enhance the field of vision. The frame is constructed from TR90 injected nylon with beta titanium armature and hardware, and features our signature D+ therapeutic grade lenses, constructed from a proprietary form of shatterproof polycarbonate. The lens interiors are treated with both anti-reflective and oleophobic coatings for holistic eye protection and water and oil repellency. A fully adjustable and hypoallergenic rubber nose pad and temple tips provide a secure and customizable fit.

23g

Lens

D+ Sports Yellow Lens
D+ Sports Yellow lens is a shatterproof polycarbonate lens with high light transmission. The lens offers 100% UVA/B protection while transmitting 74.40% of visible light and 31.67% of blue light. It is engineered to render the environment brighter, suitable for low light conditions. Best for sunset and sunrise runs.

The Sports Lens of the Future
D+ lens technology is constructed from a proprietary form of polycarbonate, which is shatterproof. The lens interior features an anti-reflective application for holistic eye protection. The lens is finished with our oleophobic treatment making it water and oil repellent.

Technology

The Most Comfortable Sports Frame
Our hypoallergenic adjustable nosepad is mounted with titanium screws and a titanium core to produce the lightest, most comfortable sports frame. We recommend visiting a preferred optician to ensure a durable and comfortable fit.

Titanium Grade 2 Core
Our frames are crafted with a titanium grade 2 core, providing strength while retaining flexibility. Grade 2 ensures durability along with a high level of corrosion resistance, making it a material widely utilized in aerospace applications.

Each frame is accompanied with an Ultrasuede® pouch, serving as both a storage solution and a lens-cleaning accessory. Ultrasuede® is a soft material with a luxurious texture incorporating 30% recycled plant-based fibers, utilizing advanced fiber technology pioneered by Japan’s Toray Industries, Inc.

Research & Development
District Vision researches and develops tools for outdoor pursuits. We have collaborated with athletes to produce the world's first proprietary Japanese eyewear system. With all our products, we maintain the methodology of Kaizen, the concept of continuous improvement, to make the finest tools for athletes.