
Honestly thought the laser thing might just be a gimmick from the pictures. It shows up super clear on the pavement at night, and cars give me a wider berth now.

A single red point on a dark road is easy to misjudge. Drivers see it, but they cannot read where your bike ends and their lane begins.
The Spider projects a laser frame onto the asphalt on both sides of your rear wheel. It draws the width of your space in red light, at the exact spot a driver needs to see it. And it turns itself on the moment the light drops, so you never have to remember.

Shot from behind, at road level, on an unlit path.

The laser frame appears the moment the light drops.

150 lux through rain, fog and road spray.

Four brightness modes for lit streets and dark paths.
One mount, one press, then it handles the rest.

Wrap the silicone strap around your seatpost and hook the light onto the bracket. No tools, no screws. It comes off in seconds when you lock the bike outside.

Press the button once to arm it. From then on it reads the light around you and switches on by itself at dusk. Choose your brightness with a second press.

The 150 lux LED and the laser frame run together. You get up to 60 hours per charge, and a USB cable tops it up from any laptop or wall adapter.
No numbers rounded up, no claims we cannot support.
Everything you need to fit it. Nothing you have to buy separately.
Most taillights solve one problem: they prove you exist. That is worth something, and it is also the floor.
The problem they leave behind is distance. A driver can see your light and still misjudge how far to swing out. A laser frame answers that question before it is asked, because it puts the answer on the road in the driver's own headlights.


Honestly thought the laser thing might just be a gimmick from the pictures. It shows up super clear on the pavement at night, and cars give me a wider berth now.

Got caught in a nasty downpour on Tuesday with zero issues. Water did not get inside the charging port at all, and I have not had to recharge it after two weeks of commuting.

Took less than a minute to put on. It weighs basically nothing and feels sturdy. The four brightness modes are useful depending on whether I am on a lit street or a dark path.
Yes. A light sensor reads ambient brightness and switches the light on when it drops. You can still turn it on manually with the button, which is useful in a tunnel or under heavy tree cover before the sensor trips.
The silicone strap is adjustable and wraps a standard seatpost. No tools. It comes off in seconds if you lock your bike outside, and the strap holds tension without marking the post. If your seatpost is unusually wide or aero-shaped, check the strap length before ordering.
IPX-5 covers rain and road spray, and the charging port sits behind a sealed cover. It is not built for immersion, so do not submerge it. Dry the port before charging after a wet ride.
Bright enough to read as a hard red point through fog and spray at typical following distance. It is a warning light, not a headlight: it makes you visible, it does not light the road ahead of you.
The laser projects down onto the road surface at a shallow angle around your rear wheel. It is aimed at the ground, not into traffic. Keep the bracket snug so the pattern stays flat on the asphalt and does not lift toward a driver.
Up to 60 hours per charge. That figure assumes the lower brightness modes; running at maximum output with the laser on will shorten it. In practice, most commuters charge it every week or two.
Mount it where the laser can reach open road behind you. A rack bag that overhangs the seatpost can block the projection, so fit the light lower on the post, or on the rack itself if you have a mounting point.
You can, and the strap is designed to hold. On a bike parked outside in a city, take it with you — the quick clip is there so you can. It weighs about 68.5 g, so it disappears in a pocket.
I commute home from work after dark, and standard taillights never felt like enough. The red spiderweb laser lines it projects onto the pavement force drivers to notice me and give me extra room when passing.
I ride year-round in the Pacific Northwest: lots of rain, fog and early sunsets. The 150 lux LED cuts right through the mist, and the laser lines painted on the wet road give cars a clear visual boundary of my bike lane.
Simple, effective, and does exactly what it promises. Came neatly packaged with the taillight, the silicone mounting bracket and the USB charging cord. Snapped onto my road bike in seconds.
Honestly thought the laser thing might just be a gimmick from the pictures, but it shows up super clear on the pavement at night. Cars definitely give me a wider berth now.
Got caught in a nasty downpour on Tuesday and had zero issues. Water did not get inside the charging port at all. Still working great and I have not had to recharge it after two weeks of commuting.
Took less than a minute to put on. It weighs basically nothing and feels sturdy enough. The four brightness modes are nice depending on whether I am on a lit street or a dark path.
You're all caught up
You bought the bike to get somewhere. The light is what gets you there in one piece when the sun goes early.
One press in the morning. It handles the rest.