Do you leave your precious cargo bike outside ?

Do you remove the saddle by fear of getting it stollen ?

Then this model is for you ! Without a seat post, rain can accumulate inside your frame and cause corrosion. This simple plug fixes this issue by covering the hole when your seat post isn't there, so that no rain can enter.

Works with the extra wide seat post of Tern GSD bikes and any other bike with posts that are 35mm in diameter.