Engearment is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. We only recommend gear our team has actually tested. Learn more.

Arc’teryx Sonii SL Skort 4″

Review by Erin Trail

The Arc’teryx Sonii SL Skort 4″ is up to the task for summer hiking trips and everyday wearing.

Arc’teryx Sonii SL Skort 4"
Arc’teryx Sonii SL Skort 4″

Details

  • Lightweight
  • Wind resistant
  • Versatile
  • Water repellent
  • Superlight (SL), durable softshell fabric resists snags, tears, and abrasions
  • Two hand pockets with zippers
  • Two cargo pockets with flaps
  • Hook waist closure and back waistband elastic for adjustable fit
  • Fabric: Fortius™ DW 1.0 – Woven Double Weave, 125gsm – 86% Nylon, 14% Elastane
  • PFAS free
  • Made from bluesign® approved material

Fit and Function

I am a women’s size 10 on the Arc’teryx size guide. I have found the Sonii L Skort 4″ to be fairly true to size, leaning on the slightly too big side.  The shorts part of the garment fit excellent across the waist, hips, and rear.  I do have to hook the skort attachment on the smallest loop for the best fit, making me wonder if they are a smidge too big for me.

Arc’teryx Sonii SL Skort 4"
Arc’teryx Sonii SL Skort 4″

The Arc’teryx Sonii SL Skort 4″ is kind of like a reverse mullet, with the skort option being a wrap-around the front and shorts in the back. The skort feature is a panel of fabric (2 layers) that wraps across the front and hooks into a looped section of the waistband.  The mechanics of the skort are great – the hook is secure and doesn’t move.  I do wish that the skort panel was cut a little shorter.  The corner of the flap hangs down below the hem of the shorts and is a little annoying when you’re actively hiking.  I ended up tucking the flap up into the waistband to reduce the flapping (and my annoyance) while I hiked.  I think if the skort flap was a single layer and/or cut so the bottom hem was flush or slightly higher than the short hem, this would have felt less annoying.

Arc’teryx Sonii SL Skort 4" (with the skort flap hidden)
Arc’teryx Sonii SL Skort 4″ (with the skort flap hidden)

From a style perspective, the askew bottom hem of the skort does look visually interesting and I generally wear it in skort mode when I’m doing less active things.

The pockets of the Arc’teryx Sonii SL Skort 4″ are very well done.  There are two zippered side hand pockets, each big enough to fit your phone.  My favorite pocket is the cargo drop in pocket which lays across the front right hip of the skort flap.  It perfectly fits a phone; your phone doesn’t move around and it doesn’t way down that side of the skort.

Arc’teryx Sonii SL Skort 4"
Arc’teryx Sonii SL Skort 4″

The fabric of the Arc’teryx Sonii SL Skort 4″ is on the heavier side. It’s a “superlight” softshell fabric, and I definitely get some outerwear vibes from how it feels and moves. The fabric is slightly stiff and slightly heavy – it doesn’t move like lightweight running or hiking shorts.  The payoff for the softshell fabric’s weight is durability.  Any dirt or dust easily brushes off of the fabric.  You can also be confident sitting on rougher surfaces (rocks, logs), knowing that the Fortius™ won’t snag or scuff.

Arc’teryx Sonii SL Skort 4"
Arc’teryx Sonii SL Skort 4″

I am also super happy to report that the leg inseams do not creep up as you hike, likely due to the heavier weight of the fabric. The seams are well done and I haven’t experienced any rubbing or chafing, even after a 3 hour hike.  I also loved the 4″ inseam and found that to be the perfect length to avoid any skin rubbing.

Closing Thoughts

The Arc’teryx Sonii SL Skort 4″ is a fun option for hiking or hanging out, purpose built with durable fabric and plenty of storage pockets.

The Arc’teryx Sonii SL Skort 4″ is available for women in three colorways (Moondrop, Black or Habitat) in sizes ranging from 00 to 16.

Arc’teryx Sonii SL Skort 4"
Arc’teryx Sonii SL Skort 4″

Erin Trail

Trail Boss of Stoke

Erin Trail’s hobby is collecting hobbies. She’s a 5th Generation Coloradan and grew up exploring the outdoors on family camping trips and hikes.  Her first backpacking trip was at eight years old to Grizzly Reservoir – she proudly carried all of her own gear those 3 miles from the main parking lot to the Reservoir.
Erin Trail of Engearment.com
Erin Trail of Engearment.com
Erin is an adult-onset athlete who started as a Masters Swimmer and then developed into a triathlete.  She has completed 5 Ironman races and nearly 20 x 70.3 distance Ironman races, including the World Championship in Lahti, Finland, in 2023.  In 2025, she raced for Team USA in Pontevedra, Spain for the World Triathlon Cross Tri World Championship. She placed 9th in her age group and was the 1st American woman in her age group.
Somewhere along her triathlon journey, she picked up deep love of cycling. Cycling encouraged her to see landscapes in a new way, learn new skills and to develop self reliance; now she often goes and does Type 2 rides just to see if she can do it.  She’s got all the bikes: gravel, mountain, fat bike, time trial and road.
She is even known to combine her love of camping and cycling and go off on solo 24 hour overnight bikepacking trips in the mountains of Colorado. In addition to bikes, she teaches yoga, lifts weights, skis, SUPs and has recently purchased a campervan.

Erin is a former Montana park ranger with a degree in environmental engineering.  She loves getting into technical details while putting her gear (and herself) through the paces. She shares her home in Colorado with her husband, Will, and her 3 cats (Zipper, Brewtus, and Simcoe).
Fall and winter 2025 will bring Erin to the “Adventure Side”, with many camping, vanlife, bikepacking, and mountain bike rides. Once the snow flies, she can be find resort skiing, fat biking, and triathlon training (inside and outside).
In 2026 Erin took the National Championship in her Age Group for the USA Triathlon Cross Tri. She’s also racing the a National Championship Road Sprint and Olympic Distance race in Milwaukee and a few other off road triathlons and bike races.  In 2027, she will represent Team USA at the World Championship Cross Triathlon in Edmonton, Canada. She’ll also save lots of room for adventure time with her friends and husband.
When not adventuring, she can be found on a sunny patio somewhere, drinking beers with her husband.

Leave a Reply

Trending

Discover more from Engearment

Subscribe now to keep reading and get access to the full archive.

Continue reading