As the Georgetown Business Improvement District works to make the historic neighborhood cool again, it asked itself, “What is cool?” The answer came from the skies. Umbrellas, of course. But what’s cooler than cool? Umbrellas plus the sharing economy.

Welcome to the future, folks: the Georgetown BID ParasolShare Program launches its pilot tomorrow.

Here’s how it works: 49 retailers in Georgetown have a collection of parasols, which shoppers can use to protect themselves from the summer heat as they stroll the streets. A map available on the BID’s website (and below) shows where people can pick them up and return them when they leave.

“Our CEO was out walking one day in Georgetown last summer, and it was hot and humid,” says Nancy Miyahira, the head of marketing for the BID. “People get drenched in outdoor sweat in this outdoor shopping district, so we were thinking what we could do to help.”

The nylon parasols say “Shop Georgetown. Stay Cool.” They’re meant for heat protection, not rain, so you’re on your own when the moisture is coming from above rather than from your own armpits.

But considering how crowded those red brick streets are, will the parasols just result in lots of gauged eyes?

“We considered the span of the parasol—it’s about 28 inches when it’s open,” which is smaller than the average umbrella, says Miyahira. “And the handle is a little longer for people who are taller.” Georgetown BID has also been widening sidewalks on M Street since April on the weekends.

And because the parasols don’t come with GPS trackers, they’ve got no way of keeping them in Georgetown. “We’re hoping that by the name itself and the concept that people understand it’s a shared program, but know that some may find themselves going home with people,” says Miyahira.

The BID will roll out the parasols in phases, a couple hundred at a time. While Miyahira declined to say how much the program cost, she says, “It hasn’t been a huge capital investment, nylon parasols aren’t that expensive.”

Georgetown BID is two years into its 15-year action plan to reinvigorate the neighborhood. Earlier this year, it notched a victory by helping end the ban on new restaurant liquor licenses, and has been pushing for a gondola from the neighborhood to Rosslyn.