To buy: From $13; amazon.com. Just like more expensive hard seltzer koozies, the Maars Skinny Can Cooler is double-walled. This helps it keep drinks cold for up to 12 hours without sweating, even under the scorching summer sun. Its slim size fits all the major hard seltzer brands, including White Claw, Truly, and Bon Viv, plus skinny beers, too. Maars arguably beats its competition in its sheer selection of colors and patterns. The Skinny Can Cooler comes in 21 choices, from a dreamy tropical leaf pattern to a glittery rose gold to a pretty pastel geode print. If you prefer a more subtle design, there are solid matte black and sleek silver options, too. And since you can buy your koozie in packs of one, two, or four, you don’t necessarily have to choose. The best thing about the Maars Skinny Can Cooler is its price. Starting at just $13 a pop, they cost half of what other similar koozies sell for. And reviewers say that despite their affordability, Maars koozies work just as well as their more expensive counterparts.