The Solstice Cyclists

According to Wikipedia, the Solstice Cyclists are:

...an artistic, non-political, clothing-optional bike ride ensemble celebrating the spirit of the Summer Solstice, and who, by tradition, usher in the beginning of the free-spirited Summer Solstice Parade & Pageant, which is an event produced by the Fremont Arts Council in the Fremont district of Seattle. The cyclists are commonly referred to as the naked cyclists or naked bikers by those outside the group.

And they've just come down my street.