Hydro Flask has announced the launch of a new original song in conjunction with its brand campaign “Let's Go.” The company has partnered with two independent musicians – Dave Depper of Death Cab for Cutie and folk singer-songwriter Laura Gibson – to release the original single “Let's Go!” The song began streaming through Spotify and Apple Music on March 15. Hydro Flask will donate $1 for every song stream up to $10,000 to support the National Park Foundation, which works to preserve parks and green spaces across the U.S. Along with the song, Hydro Flask has also launched a film featuring the song as a backing track, and a short video on the “Making of the Song,” featuring behind-the-scenes footage from the recording studio. Both films can be viewed on Hydro Flask's YouTube channel at www.youtube.com/user/hydroflask.