A Top-Selling Arc'teryx Jacket That Shoppers Swear Is the 'Best Thing' the Brand Makes Is Over $100 Off

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Just days after the start of REI's massive Anniversary Sale, the event's bestselling products are starting to reveal themselves. Camping gear is at the forefront, including Exped's MegaMat Duo 10 sleeping pad and The North Face's Wawona six-person tent. REI's Co-op Cycles-brand bikes are also among the top sellers. But this sale is one of the best opportunities to get outdoor clothing from pricey brands like Arc'teryx for up to 30% off, including one of the brand's fan-favorite mid-layer jackets that's marked down by more than $100.

The Arc'teryx Proton Insulated Hoodie is now $245 during REI's Anniversary Sale—a discount of 30% on the normal $350 price. This jacket has earned 50 five-star ratings from shoppers who say it "might be the perfect jacket," and it's currently trending as a top five bestselling men's clothing product during the sale. It's still available in four great colors and comes in sizes small through XXL, though it's rapidly selling out.

Arc'teryx Proton Insulated Hoodie in Black, $245 (was $350) at REI

Like all of the best jackets from Arc'teryx, the Proton Insulated Hoodie harnesses the power of technologically advanced fabric to help keep people comfortable whether facing the side of a frosty mountain or trying to take the kids to school before the first bell. The breathable and durable Fortius Air 20 fabric shell and Coreloft Compact 80 insulation allow you to achieve temperature equilibrium easily in any condition. Despite the well-ventilated materials, the jacket is still wind- and water-resistant thanks to a durable water-repellent finish. The Proton was designed with tons of useful features, but the most notable are the gusseted armpits that enhance mobility alongside the articulated elbows, the convenient insulated hand pockets, and the helmet-compatible hood that's a godsend for extreme cragging and cycling.

There's so much that shoppers love about this jacket, but one of the main call-outs is its ability to regulate temperature. "This is the best thing Arc'teryx makes," one shopper claimed. "It solves the biggest problem in outdoor homeostasis, which is how to stay dry while it's cold out, but [knowing you] will sweat. The jacket allows you to stay warm, but the fabric breathes at about 40 cubic feet per minute, which, for most moderate activity (hiking), will allow you to stay dry from your own body vapor. This jacket is especially effective when you pair it with mesh base layers."

Arc'teryx Proton Insulated Hoodie in Lampyre, $245 (was $350) at REI

Others say it's one of the most versatile pieces they own with the ability to stand up to any adventure. "This is my favorite Arc'teryx piece due to its versatility, especially for high-output activities," another shopper said. "I throw this on for alpine skiing under my rain shell, [backcountry] and [cross-country] skiing as a high output outer layer, spring cragging as a belay jacket, and much more. This is my No. 1 piece for my [search and rescue] kit as well in bright colorways….Durability-wise I have had no issues so far. I drag this through granite chimneys and all sorts of thorny Cascadian underbrush with hardly any sign of abuse."

Arc'teryx clothing is usually on the pricier side, so when you find a deal like the Proton Insulated Hoodie that's now over $100 off, you grab two. Sizes are selling out quickly, so make sure to grab yours while they're still around.