REI Has Mammut's Triple-Layer Rain Jacket With 'Very Effective' Waterproofing for Nearly 50% Off
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In This Story
Why We Love This Deal
Springtime adventurers know the benefits that a premium rain jacket can have outdoors. Say you're hitting a 14er in May, or you're out on the ocean for a day-long fishing trip, and partway through, the sky opens up. There's not much you can do in the middle of nowhere, and that's why it pays to have something with proven waterproofing. Most times, layers like this—ones built for serious rain—can cost a lot of money, but REI has a big deal on one from Mammut, dropping the price by nearly half.
The Mammut Ducan Guide HS Hooded Jacket is on sale for $150, a 49% discount from its normal price of $299. This is a top-quality rain jacket you can depend on: It features a robust three-layer waterproof design for maximum protection from the elements. It’s on sale across three colorways with a full size range from small to 2XL, but what's more impressive is that it’s also the most affordable 3L rain jacket available and widely in-stock at REI right now.
Mammut Ducan Guide HS Hooded Jacket, $150 (was $299) at REI
What Shoppers Should Know
- Colorways Available: 3 on sale, 2 full price
- Sizes Available: S-2XL
- Fabric: 100% recycled polyester
- Waterproofing: 3L Mammut Dry Tour laminate
- Best For: Hiking, trail running, everyday wear
The Ducan Guide HS is a hard-shell jacket you can rely on through rainy commutes and backcountry hiking trips, among plenty of other types of excursions. The core feature is its three-layer design: A Mammut Dry Tour laminate system sandwiches the waterproof membrane between two layers of fabric, protecting the membrane while offering lockdown protection from the rain and wind. It’s made from 100% recycled polyester, and it includes dual pit zippers, so you can open up the vents and dump heat when you’re working hard.
Beyond this, the shoulder seams are placed for optimal comfort when wearing a pack, and the hood can be adjusted with a single cinch to keep your head protected from the elements (the high stand collar helps with that, too). Velcro cuffs and a cinchable hem help you lock out drafts, and Mammut used water-resistant zippers on the main closure and the dual hand pockets to prevent leaks.
Related: Danner's Rugged '80s-Inspired Hiking Boots Are on Sale for $88 Right Now
What Shoppers Are Saying
REI shoppers called the Ducan “breathable and tough” and said it performed well through all kinds of outdoor adventures—even skiing. Reviewers appreciated its relatively lightweight feel, especially considering its burly 3L construction, and said it’s “very comfortable” to wear. And, of course, the waterproofing really works. Multiple shoppers highlighted its robust protection and said it’s “very effective at shedding moisture.”
With the Mammut Ducan in your pack, rainy weather won’t derail your day—and at just $150, it’s an awesome bargain for a true 3L rain jacket. Snag yours ASAP, because I have a feeling REI shoppers are going to snap this one up quickly.

