Suitable for those seat post in dimension 2.2 cm - 3 cm
Please use 2*AAA battery(not include)
Provide you more safety when cycling in dark
Product material: plastic. Suitable for those seat post in dimension 2.2 cm - 3 cm. Please use 2*AAA battery(not include).The tail lights provide added safety in dim lit areas and situations, and increase visibility to motorists. Perfect for biking and motorcycling in early mornings, late evening and at night when it is dark.