TL;DR: Ensure your water bottle stays bacteria-free with the KLEAR self-cleaning UV-C cap and water bottle, on sale for $49.99 as of April 8.

Congrats! You’re helping to save the planet by drinking from a reusable bottle. But did you know you could be harming your health if you’re not cleaning it thoroughly?

Not to gross you out or anything, but your Hydro Flask probably has some less-than-ideal flora building up inside its walls. The KLEAR self-cleaning UV-C cap can help keep them at bay, though.

A universal cap that fits most wide-mouth reusable bottles (Hydro Flask, Thermoflask, etc.), the KLEAR cap helps prevent germs and bacteria from thriving in your water bottle using ultraviolet C light. The sanitizing process only takes a few minutes and is a total game-changer for cleanliness. The cap's battery charges via a USB connector, and you can get about 25 cleaning cycles on a single charge.

Don't worry if you don’t have a wide-mouth reusable bottle that will work with the KLEAR cap — there’s a 32-ounce one included with your purchase. It features double-wall insulation and can keep your water cold for up to 24 hours.

Note: According to the FDA, UV-C radiation has been effective in reducing the spread of bacteria, but it's not known whether UV-C is capable of inactivating the virus that causes COVID-19.

Check out both the cap and bottle in this unboxing video:

Usually, snagging both the cap and bottle would cost you $79, but for a limited time, you can shave 37% off that price and pay just $49.99.