You'll feel noticeably safer and more relaxed doing the activity you love. 
What powers the Down Low Glow?
The Down Low Glow comes with a lightweight NiMh rechargeable battery. It weighs 1 pound and is the heaviest component of the DLG system. It is weatherproof and has a high quality coaxial power connector that mates with our DLG chargers, and with the DLG light tubes. It also has a foam strip underneath the outer rubber layer, to prevent road vibrations from dislodging it.
Will it fit on my ride?
The Down Low Glow fits a wide variety of vehicles. Most bicycles, including kids bikes, recumbents, tricycles, fixed gear racing bikes with tight front-wheel clearances, and full-suspension mountain bikes can be fitted up with no problem.
The Down Low Glow light tubes are 12.75" long and have approximately 10" of wire connecting them to our power driver box. Between the battery and the power driver box is another 12" of cable.
Can I ride in the rain with the Down Low Glow?
We've been selling the Down Low Glow since 2003, and waterproofing has been the number one challenge, since day one. Each winter we learn a little bit more about what it takes to sell a product ready for bike commuters who will depend on it rain or (moon)shine.
Here's the latest information, as of January 2008.
The seals on the lights tubes are doing very well. We are now getting very few reports of condensation inside the light tubes.
The batteries are water-resistant and no longer have a power switch that is vulnerable to water damage. (A waterproof power switch is now optionally available.)
The connection between the light tube and the power driver box has been the source of most of the water-related failures this year. We are working on improving this connection and are using a flexible waterproof adhesive to seal it.
Beyond that, we've discovered that even on systems with perfect seals, the Down Low Glow's performance/brightness is affected by water on the wires between the light tube and the power driver box. We're also working on simple solutions for this problem.
What follows is information about our waterproofing efforts from 2007 and before.
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It's late, it's rainy, and you really just want to get home. But don't forget about safety, because rainy nights are when you most need good lighting. Fortunately, the Down Low Glow is suitable for use in the rain.
Enjoy and ride safe!
What color should I get to maximize my safety?
Many of our customers wonder whether one DLG color is the best for safety.
We've found that, what's more important than picking a certain color is keeping your DLG battery fully charged and ready for use. A DLG with a fully-charged battery is always going to provide you with great visibility, no matter which of our six colors you choose.
Can I ride offroad with the Down Low Glow?
Yes, the DLG is suitable for trail use and hard urban riding. The tubes are protected using our patented shockproofing technique. Just don't drop them on hard surfaces like concrete.
Check out the video this page for more info on shockproofing.
Do cold temperatures affect the Down Low Glow?
We have had some customers use our product for snow and ice biking in the northern states. The temperature does affect the performance, but only in the time it takes to warm up the light. Once it's warmed up, the low temperature is OK. Also, using a full battery is more important when the weather is cold. A battery that is less than half-charged may not be able to bring the lights to their 'superbright' state in cold weather.
I'm having trouble choosing between the dual and single tube Down Low Glow. Can you help me choose?
Single tube systems look great, are easy to install, and have long battery life when compared to our dual tube systems (5-6 hours versus 3 hours).
If you're the type of person who likes to move lights from one bike to another, or take them off your bike because you're concerned about theft, you'll like the fact that the single tube system has a faster on/off time and fewer mounting pieces to lose when you move the DLG from one bike to the next.
Can I mix two colors within a Dual-tube Down Low Glow system?
Yes, we can customize a dual tube Down Low Glow system with two different colors. This creates a beautiful color fade underneath your bicycle. Some of our favorite color combinations include: Ice Blue and Envy Green, and Ice Blue and Plush Red.
How does the Down Low Glow compare to traditional front and rear bike lights?
People who ride with the Down Low Glow regularly realize it's much more than a fun accessory. It provides a higher degree of all-around visibility than other safety products.
The photos here show how the DLG's light cloud is far more diffuse than a traditional halogen headlight. This means your Down Low Glow will hit the angles much more effectively, covering your visibility to the sides.