Outdoor enthusiasts and home baristas alike wait all year for Yeti products to go on sale. In an exceptionally rare turn of events this Cyber Monday, Amazon has slashed prices on some of the brand’s most sought-after drinkware, including the wildly popular 14-ounce Rambler Mug which is currently just $21 — the lowest price ever (usually $30).

This kitchen-grade stainless steel mug with double-wall vacuum insulation rarely sees discounts. Already over 30,000 units have sold in the last month alone on Amazon, where the mug is currently the #1 bestseller in the sports & outdoors category. With demand surging another 10,000 orders since Amazon’s 11-day Black Friday and Cyber Monday sale began, we recommend moving quickly if interested as both pricing and stock has fluctuated dramatically over the weekend.

What makes the Rambler so special is its ability to keep cold drinks chilled for hours and hot drinks steaming thanks to a design that harnesses the power of air pressure technology. Soups, oatmeals, coffee, cocktails — you name it, the Rambler was built to handle it. The mug is also rust-resistant, stackable, interchangeable with other Yeti drinkware accessories, and dishwasher-safe for easy cleaning.

While this Cyber Monday deal includes the Rambler mug in classic colors like Charcoal and Black, more vibrant shades like Seafoam and Canopy Green are also marked down while supplies last. Other colors have already sold out, so take that as your cue to buy now before the $21 price evaporates at midnight.

Outdoor adventure can stir up spills, but the Rambler’s unique MagSlider lid ensures minimal messes will occur on the trail. It also means you can confidently throw this mug in your backpack without worrying about leakage.

Yeti products are built tough for the outdoors, and the Rambler mug has clearly won over thousands of devotees if Amazon sales data and reviews are any indicator. So take advantage of this exceptionally rare 30% off Cyber Monday deal before the clock strikes midnight. At just $21, Yeti’s bestselling 14-ounce mug is the perfect holiday gift for the outdoor explorer or coffee connoisseur in your life — and one they’ll certainly use daily for adventures in the wild or while wired on coffee at home.