Expect a slim fit; if in-between sizes, consider sizing up.
The ultimate performance short, tailored for every run. The RC Short features the mobility of a four-way stretch fabric and a built-in brief for support.
Design:
GREY MATTER
Size:
Choose a size
Size & fit
Men's clothing
Letter
US
Chest, cm
Waist, cm
XS
32-34
86-91
71-76
S
34-36
91-97
76-81
M
38-40
97-102
81-86
L
42-44
102-107
86-91
XL
46-48
107-112
91-97
2XL
50-52
112-117
97-102
3XL
54-56
117-122
102-107
4XL
58-60
122-127
107-112
This is a general chart — New Balance sizing may differ, check the product description.
International delivery
Shipping calculated at checkout
Returns & exchanges
Within 30 days of delivery
Expect a slim fit; if in-between sizes, consider sizing up.
The ultimate performance short, tailored for every run. The RC Short features the mobility of a four-way stretch fabric and a built-in brief for support.
SKU
5-MS41283
Brand
New Balance
Category
mens / shorts
Variants
12
Customer reviews
5.0
Help with sizing
Was worried about the fit so I ordered two sizes M and L. I'm 5' 10" 160lbs. I wear size 31" waist from Levi's and GAP. While I prefer the feel of the elastic waist band on the Large, the fit is entirely wrong with the leg openings too large. Medium is the right size as far as appearance. The waist is comparable to an adidas running short I also own, so these are not particularly smaller than the competition. These shorts are not forgiving if you are slightly to moderately overweight, so I think that's where the sizing complaints are coming from. If you also wear size 31" then get a Medium. I think 32" waist would be slightly too snug. The NB models are size 30" waist and they wear Mediums.
10/8/2025
5.0
verified purchase
great shorts
good pair of shorts. good fit and good look. good colors.
7/7/2026
5.0
Very confortable
[This review was collected as part of a promotion.] Everything about this short just works. I already wore it in a couple of running sessions
4/3/2026
5.0
Comfort and performance
[This review was collected as part of a promotion.] Nice and comfortable short, plus breathable too. really enjoy it for daily run, from easy to long run
3/6/2026
5.0
verified purchase
Another pocket
These shorts are great. One benefit for my marathon training is I keep finding more little pockets to put gels in that I didn't see in the original pics. They do fit snuggly. My measurements say the small side of a medium, but if I was any heavier I would go up a size. So if you are on the high end of the measurements, I would size up. Liber is very comfortable with no chaffing issues
3/6/2026
5.0
Perfect everyday running short
[This review was collected as part of a promotion.] I've been putting these shorts through their paces on daily runs and they've been fantastic. The lightweight fabric keeps things cool and doesn't weigh you down, even on longer efforts. Highly recommend for any runner looking for a reliable, comfortable everyday short.
3/2/2026
5.0
verified purchase
Great shorts and Great Value. Love Joes’
Great pair of shorts at a great price. The fit is great, and lots of room to move around.
11/2/2025
5.0
verified purchase
NotaCowboysfan
Next level. Light weight and plenty of room to roll. Highly recommend!
9/8/2025
5.0
verified purchase
Roomy for running but not baggy for wearing
These running shorts, with internal support, are roomy enough for running but tailored to avoid being baggy. The high-quality fabric feels durable, and it dries quickly after running and after washing.
5/27/2024
5.0
verified purchase
Great
Great shorts. Great style. Great gains. Would recommend for greatness
