These are a stretchy pair of lightweight softshell hiking pants. The Ferrosi Convertible pants feature an 86% ripstop nylon and 14% spandex blend. These pants have a 31-inch inseam, and they convert into a 9.5 inch Bermuda short. There is only one inseam length available, and they come in sizes 2-14. The material is comfortable and moves with you, but the legs are on the slim side, and the convertible zippers can feel constricting at first. These issues didn't deter our testers for long, though.
The Ferrosi's fit best on narrow hips and less-curvy women. For our tester's athletic build, these pants are just right.
Comfort & Mobility
At first, we weren't too sure we would like the Ferrosi's. They seemed to fit a bit snug around the thighs, and we weren't too convinced that we would be able to move well in these pants. However, once we started moving, we were pleasantly surprised. There isn't any high stepping that these pants can't handle. We climbed, scrambled, hiked, even slept in them, and have zero complaints.
Their tightness around the thighs is a bit odd at first, but it goes away once you start moving and there was never any chafing or rubbing noted by our testers. The zippers on the convertible leg are protected and don't cause any problems. Many online reviews suggest sizing up, and if you have thicker thighs, we would recommend this too. Plus, you'll have an easier time putting a base layer underneath if you plan on wearing these pants in colder temperatures.
We love these pants so much that we wore them for five straight days, and the pants never lost their shape. They can take quite a bit of abuse. We wore the Ferrosis on the trail, at camp, at the crag, and even to sleep one night under the stars because we loved them so much. The material moves with your body, not against it.
The Ferrosi didn't lose its flattering, but mobile, fit after five days of use.
The ability for these pants to turn into Bermuda shorts increases their versatility score. When in shorts mode, the Ferrosi's offer ample coverage. The tighter fit makes for a more flattering pair of shorts, which is a tall order for a long pair of shorts. Additionally, the latest version of these pants includes a drawstring at the bottom, enabling you to cinch the bottom of the legs for climbing, bouldering, traveling over scree, even cinching up for a cropped pants look.
Although the Ferrosis are convertible pants, they don't scream hiking pants. We still feel somewhat comfortable wearing these into town, although they aren't the most stylish pants in this review.
The Ferrosi's are not only suitable for a wide variety of hiking terrain, but they are perfect for other sports too. We especially like using these for climbing. The deep hand pockets allowed us to store small items below our harness and the flexible, durable material stands up to sharp granite and abrasive sandstone. They also fit nicely under a harness.
In cinch mode, the Ferrosi pants have the unique ability to make excellent cragging pants, or keep out small pebbles and dirt over bumpy terrain.
These pants are lightweight and highly breathable. They are able to cut the breeze down a bit when we encountered chilly desert winds, but aren't enough to be a go-to choice for winter or a crisp fall day without layering them.
We appreciate the balance in the design here, since you don't always want a pair of pants to let in every single breeze, but you do want them to vent well on a hot day. We had no problems wearing these comfortably in the hot desert. Their ability to convert to shorts or cinch up to cropped pants helps keep them comfortable no matter how hot it gets.
The cinch strap on the Ferrosis comes in handy to keep out rocks, wear them in capri mode, or do some climbing at the crag.
The Ferrosi's are well-made pants with double-stitched seams and heavy-duty closures at the waist. The material is surprisingly thin, but we didn't encounter any issues scrambling over sandstone or climbing in them.
The gusseted crotch does a lot to enforce the slim fit of these pants. We wore these pants in the desert for nearly a week without seeing any signs of wear.
The Ferrosi's handled the abuse of trad gear and sharp rocks during the testing period.
Water does bead up on these pants initially, but once they got soaked, they take less time to dry than most of the other pants in this review. Once wet, the Ferrosi's dried in the sun within 15 minutes, which is quite impressive. There was still slight dampness on the felt waistband, but that quickly dried in another five minutes.
These pants also offer UPF 50+ protection, which we truly appreciate in the intense desert sun. When it comes to wind, this 90D nylon provides some resistance, but it also allows cooling breezes to penetrate. Some people may feel that these pants run a little too breezy, but since the pant stretches easily, it's easy to fit a base layer underneath without feeling like your waist and hips are too squeezed.
The Ferrosis (left) and Lobo's (right) getting soaked for some of our weather resistance testing. Water just rolls right off these pants and what does soak in dries quickly.
In addition to the convertible shorts and drawstrings at the bottoms of the legs, this pair has a zippered pocket on the leg, two rear pockets, and massive hand pockets. Throughout all of the pants we tested, useless pockets are a recurring disease, but the Ferrosi's are a mixed bag. The side zipper pocket is pretty useless aside from holding a car key and an ID. However, the hand pockets are beyond deep, allowing you to carry your phone without worrying about it falling out. Sometimes this was uncomfortable while high stepping or scrambling, but for modest terrain, it didn't bother us.
The stretchy material combined with a felt-lined waist belt holds up exceptionally well day in and day out. The Ferrosi has a built-in drawstring that gives you added assistance to keep these pants right where you want them. There are also belt loops if you prefer to wear a belt.
Although the zippered side pocket of the Ferrosis won't hold a smartphone, but our phone feels secure in the extremely deep waist pockets.
The cost of these pants ranges on the higher side of the hiking pants market. However, if you don't feel the need for shorts conversion, a zipper-less pair without the convertible option is available at a slightly lower price.
The Outdoor Research Ferrosi Convertible pants are the model we keep coming back to thanks to the stretchy, durable material and lasting fit. However, we certainly recognize that these pants aren't best for curvier women, and we would encourage you to try before you buy if that sounds like you. If they fit, we certainly recommend them for a broad range of outdoor recreation, hiking and beyond.