Fly-By 3'' Running Shorts
Product code: T128983S
About this style
Experience next-level comfort with these Fly-By 3'' running shorts from Under Armour. They're cut in a regular fit with split sides for unrestricted movement during your workout, whether you're hitting the gym, track, trail running, or going for a jog. The elasticated waistband features an internal drawcord for a secure, adjustable fit. Made from lightweight, breathable fabric, they wick away moisture and dry quickly to keep you feeling fresh during athletic training sessions, even when things get sweaty. Practical details include an invisible zip pocket for your valuables and mesh panels for enhanced ventilation, making them ideal performance activewear and sport apparel for any active pursuit. These comfortable athletic bottoms are perfect fitness gear for the dedicated athlete seeking new levels of comfort and functionality.
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Reviews (136)
Comfy
Originally posted on Under Armour
Yes, I recommend this
I love the neon look. And how it flows.
Helpful?
Shorts
Originally posted on Under Armour
Yes, I recommend this
Fit great true to size great for all activities
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To small
Originally posted on Under Armour
Yes, I recommend this
I ordered the same size as the other 2 pairs I got but these ones fit different they are smaller. I love the color tho.
Helpful?
Replied
21 March 2026
Hi! We're so glad to hear that you love the color of this style. But we're bummed that the sizing wasn't consistent, that's definitely frustrating! I'll be reaching out via email shortly to get some additional details and help you with this.
I used to love these shorts
Originally posted on Under Armour
No, I don't recommend this
This style used to be my favorite shorts, but the fit was different. Now, they fit weird and are not flattering at all. They're very loose fitting and frumpy.
Helpful?
Replied
20 March 2026
Hi, Jamie! Not loose and frumpy! That's definitely not how we want our shorts to make you look and we're sorry that's the vibe. We want our gear to make you feel next-level and we'd love another shot at finding you something that does. Please look for an email from me with more details.
Excellent track shorts
Originally posted on Under Armour
Yes, I recommend this
Granddaughter loves running in these shorts. (I wish they were a little longer)
Helpful?
Best workout shorts
Originally posted on Under Armour
Yes, I recommend this
My go to shorts for the last 5 years. Love the brief coverage and it's comfortable and light perfect for any workout. No other brands or model compares
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This product is excellent!
Originally posted on Under Armour
Yes, I recommend this
The product is very comfortable, it fits me very well. I can wear this when I play tennis or I am using the treadmill in the gym, because it can dry out very quickly so that I will not feel uncomfortable or wet all the time. I like this product very much. Also, the color is great. I think y'all should buy it.
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Super Cute and Comfortable!
Originally posted on Under Armour
These shorts are perfect! I bought them becuaseI have another pair of underarmour shorts that have lasted me YEARS. They are super cute and incredibly comfortable. They did feel a little small even though I got a Large but they still fit comfortably and I'm also 5'9 and they aren't too short.
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So comfortable
Originally posted on Under Armour
Yes, I recommend this
Great fit, light fabric. Bought in several colors.
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Best shorts
Originally posted on Under Armour
Yes, I recommend this
From training to everyday errands these are a win
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Ride up a little bit!
Originally posted on Under Armour
Yes, I recommend this
I may have ordered a size too big. Not sure if that's the issue. Overall a good pair of shorts.
Helpful?
This product was a gift, but my sister loves it!
Originally posted on Under Armour
Yes, I recommend this
These shorts were a Christmas gift for my sister. I think I brought every Jasper Blue item available. She loved the color!
Helpful?
good
Originally posted on Under Armour
Yes, I recommend this
the color is really nice and it fits well . the only problem is i hope there is a bigger pocket
Helpful?
4th pair of these shorts
Originally posted on Under Armour
Yes, I recommend this
I love the style and fit of these shorts. The pink/gray combo is quite cute. For fit, they run just a little large, I order XS when often would order a Small
Helpful?
Staple Shorts
Originally posted on Under Armour
Yes, I recommend this
Love the versatility of these shorts! Always wanted a pair and finally picked some up and I couldn't be happier. Fits TTS
Helpful?
Great for HIIT
Originally posted on Under Armour
Yes, I recommend this
I bought these shorts for surge fit and they are comfortable and keep me cool
Helpful?
Cute!
Originally posted on Under Armour
Yes, I recommend this
Our daughter loves these! Fit perfectly
Helpful?
Love these!
Originally posted on Under Armour
Yes, I recommend this
It’s getting cold but you never know when a warm winter day in Texas makes cool gear necessary. Light weight, comfortable fabric allows for free movement. I prefer liners in my shirts so these are a win for me.
Helpful?
Perfect for exercise
Originally posted on Under Armour
Yes, I recommend this
Bit loose to my size but very comfy
Helpful?
Liked Older Version better
Originally posted on Under Armour
No, I don't recommend this
I really liked the older version of these shorts better. I thought I was purchasing the same shorts but in different colors, but I was mistaken. This version has the inner mesh which I am not a fan of. Otherwise, colors are nice.
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