The OPR is our technical mountain biking short built to keep up with any style of riding, now in a more sustainable fabric. Stretchy, moisture wicking and long-lasting Pertex® Equilibrium® NetPlus® material is recycled from end-of-life fish...
Reviews
4.5
29 ratings
5
4
3
2
1
Great Mountain Shorts
The Stio OPR shorts are the best overall outdoor shorts, for all activities. Extremely comfortable with a great fit. I always buy 11. 5 "inseam shorts, used to buy another brand of bike short, these are superior. Based on the Stio size chart I ordered a 31, to fit my 32" waist. Raven color is a medium to darker gray. Fabric is soft, stretches well and is breathable. Pockets are great, 2 normal side pockets and 2 functional zip style pockets. Great fit at the waist, not to snug. I like the Stio slide type button to keep the shorts secure. Length is perfect, right at the top of the knee. I've been wearing these shorts to bike, hike and as casual wear shorts. Awesome product, I will add another pair or two,
N
Norm · 11 days ago
Belt is lacking
Positives are everything about this short aside from the belt. The pockets are good, placed well. The material is nice. Stretchy and water resistant. The fit isn't weird anywhere and pretty true to size. The belt is a huge downfall. It's made of stretchy material which means that as it gets wet from rain/sweat/etc. the belt stretches and doesn't work as well. Sadly this became a problem only after wearing the shorts a couple of times so I can't return them. I wouldn't recommend these shorts to anybody that doesn't like their pants around their ankles.
Z
Zachary · July 23, 2026
Great Do-Everything Shorts
I’m not a mountain biker, but I love the shorts for hiking, town, hanging out, dirtbagging, whatever. They fit well, ample 4-way stretch, breathable, good pockets, very comfortable overall. Can’t speak about durability just yet, but they appear well made and the fabric seems durable. Liked them so much after a 15 mile hike I bought a second pair at the Steamboat Springs store. I’m generally a 34” waist (+/-) and these fit true to size. Note they do stretch with wear but return to original size after washing.