In honor of World Water Day, Levi’s employees across the globe are taking the plunge: by pledging to wear the same pair of jeans or khakis every day for a week without washing it once. The denim giant also equipped each staff member with a Water<Less-logoed sponge for sopping up spills. Each employee is documenting their efforts with a daily snapshot, and they’re inviting you to do the same. To take part, simply tag a photo of yourself on Instagram with #gowaterless to help spread the word about reducing water use. Up for a bigger challenge? Levi’s has a series of actions you can take to whittle your water footprint even further.