It’s not a tailgater without proper drinking vessels. These stackable cups from Corkcicle are the best we’ve tried, effortlessly portable, plenty durable, and sleek as ever thanks to their stainless steel makeup. The four-cup set is so good you’ll want to get another batch, upgrading your party cups for something a little more post-college.

These are great for any number of beverages, insulate just enough, and can be reused time and time again, making them teammates with the environment. They fit cleanly into cupholders and can be thrown into the dishwasher when the final whistle is blown.

But a great cup goes above and beyond the call of duty. The Eco Stackers also boast sharp design, with excellent grip and a silicone base that won’t slip, even when the weather becomes questionable. The volume is large enough for even a big pour of beer and the trio of color options makes them quite easy on the eye.

Read more: Best Travel Mugs