5-hour Energy doesn't have a dedicated page on their website for sponsorships. Instead, they have a standard Contact Us form with a dropdown menu item for Sponsorship enquiries. They do sponsor esports teams, as you can see here on their website. They've sponsored the Detroit Renegades, CLG, and FlyQuest.
5-hour Energy believes in fielding players that compete at the highest levels in the most popular competitive video games.
As part of the CLG deal, a team house was renamed the 5-hour ENERGY® house, complete with custom branding. CLG’s League of Legends team will also have a 5-hour Energy branded jersey to sport. The sponsorship also includes specialized video content, apparel branding, social media activations and giveaways.