In celebration of their 10th anniversary, quirky local ice cream company Three Twins is doing a “Name Your Price” special all day today at all four of its Bay Area locations, including the only SF location at 254 Fillmore Street. All the proceeds will be going to charity, with the proceeds from the Fillmore shop going to Friends of the Urban Forest, who help plant and maintain street trees all over town.

This comes just in time for some warm weather — it is currently in the 80s in the vicinity of Fillmore Street. So no doubt you may encounter a line.

The "Name Your Price" thing will also be happening at Three Twins locations in San Rafael, Larkspur, and Napa, as Inside Scoop reports.

Related: The 10 Best Ice Cream Shops In The Bay Area