The Crankum is fully adjustable meaning the nose pads and temple tips can be tuned for a perfect fit. The semi-rim, broken frame design optimizes airflow and reduces weight.
Specs and Measurements
- 30 g
- Base Curve
Fit GuideFind the best fit
Finally, bike eyewear you can leave on your face.
Whether you’re grinding through a tight, twisty climb or simply stopped at an intersection, fogged lenses are an inevitability for many of us when wearing sports eyewear. The RYDERS antiFOG lens is the ultimate solution to this all-to-common problem—and you don’t have to take our word for it. See the growing list of published antiFOG reviews in our NEWS section.
100% UV400 Protection
All of our lenses block 100% of UVA, UVB, and UVC rays and harmful, high energy light to 400nm. These rays are a leading cause of cataracts, skin cancer and wrinkles around the eyes—all great reasons to block them out.
Hydrophobic + Oleophobic Coating
An altogether misleading name, this coating isn't nearly as scared of water as water is of the coating. In fact, water runs away at first contact, leaving clear lines of sight that are free from droplets and water marks. The Oleophobic characteristics repel dirt and grease, making the lenses very easy to clean.
All of our lenses are impact resistant, meaning they resist breaking up into dangerous little shards when impacted. If astronauts trust this material to keep their heads from exploding while on a 17,000 mph space walk, you’ll have nothing to worry about on your adventures, no matter how fast you’re going.
All of our lenses are made by injecting molten polycarbonate into a mold that is specially formed to eliminate distortion. This process makes the lenses optically correct (also referred to as decentred), increasing long-term comfort and minimizing eye fatigue.
We apply a scratch-resistant coating to all of our lenses. Though this process makes the surface of the lens considerably harder than the base lens material, it’s impossible to make the lenses completely scratch proof (short of making them from diamonds) so please care for them properly as they may still scratch under certain conditions.
Adjustable Nose Pads + Temple Tips
Adjustable nose pads and temple tips allow you to customize the fit of your eyewear for comfort and stability. These components are also used for fine-tuning the amount of airflow behind the lens to keep your face cool and combat fogging.
A Swiss technology, this incredible thermoplastic is the material used in all of our sunglasses (with the exception of our metal frames). Its extreme flexibility, durability and light weight make it the perfect material for performance eyewear.
Hydrophilic Nose Pads + Temple Tips
Hydrophilic [anti-slip] nose pads are an important feature to look for in performance eyewear. Hydrophilic temple tips give that extra little bit of grip that can come in handy in many situations. The material we use to make these features is so effective that it actually grips better when it’s wet — exactly when it’s needed.