Snap Chalktrail to the back of your bike and draw a line of chalk wherever your bike goes!

Draw simple paths, twisting curves, figure eights, perfect circles, or grab a group of friends and create gigantic spirograph-like designs.

The Chalktrail easily slips around a bike's rear axel for a snug and secure fit without using tools! Then slide a piece of chalk into the Chalktrail's clamp, and you're off!

One piece of chalk is included and will last for up to 1.5 miles of drawing. Replacement sets of the non-toxic, washable chalk are also available.

Dimensions (Chalktrail): 23.5" x 5" x 4.25"
Dimensions (Chalk): 5" x 1.5" diameter
Snaps on to any bike regardless of size
No tools required whatsoever
One piece of chalk included
Each piece of chalk lasts up to 1.5 miles (2.4 km)