Sometimes, couples need help getting pregnant. In Seattle, that help may arrive by bicycle.
To be more specific, a bicycle with a giant sperm cell replica on it.
"It's a delivery bike, purpose-built delivery bike, and inside the front of the sperm we can store one of our cryogenic shipping containers," says Alan Dowden, lab scientist and occasional courier.
Dowden works at the Seattle Sperm Bank. The front of the bike is the bulbous head of a sperm, about the size of very large beach ball, with a long tail stretching behind. It's framed in electric blue.