The song was written by the band's lead vocalist and guitarist Alex Gaskarth, and co-written by Andrew Goldstein, David Hodges, and Jonas Jeberg. It was produced by Goldstein and Jeberg.
Musically, "Umbrella" is a pop rock song with elements of pop punk and alternative rock. The song features a prominent use of synthesizers and a catchy guitar riff. The lyrics of the song talk about a person who is trying to find their place in the world.
The song was a commercial success, reaching number 21 on the US Billboard Hot 100 chart and number one on the US Alternative Songs chart. The song was also certified gold by the Recording Industry Association of America (RIAA).
The song was well-received by music critics, with many praising its catchy melody and relatable lyrics. The song has been praised for its anthemic nature and its ability to connect with listeners. The song has also been praised for its positive message and its encouragement of self-empowerment.
Overall, "Umbrella" is a well-crafted and catchy pop rock song that has been praised for its relatable lyrics and its anthemic nature. The song was a commercial success and was well-received by music critics.