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"A size large is a great fit for a size C but nothing bigger than that. Comfortable for sure!"
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Lucie is 5'9 1/2" wearing XS
SUPPORT LEVEL
Medium support with a secure feel, designed for the gym, running, and high-movement workouts.
Total price
Free standard shipping on all U.S. orders.
Members earn 51 Points with this purchase.
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Lucie is 5'9 1/2" wearing XS
SUPPORT LEVEL
Medium support with a secure feel, designed for the gym, running, and high-movement workouts.
Total price
Select options
Lucie is 5'9 1/2" wearing XS
SUPPORT LEVEL
Medium support with a secure feel, designed for the gym, running, and high-movement workouts.
Total price
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Size Guide
Size chart
in
cm
XS
S
M
L
XL
2XL
3XL
0
2-4
6-8
10
12-14
16
18-20
25
27
29
31
33 1/2
36
39
34 1/2
36 1/2
38 1/2
40 1/2
43
45 1/2
48 1/2
XS
S
M
L
XL
2XL
3XL
0
2-4
6-8
10
12-14
16
18-20
63.5
68.5
73.5
78.8
85
91.5
99
87.5
92.5
97.8
103
109.5
115.5
123
XS
S
M
L
XL
2XL
0
2
4
6-8
8-10
12
26
26 3/4
28 1/4
30
32
34
34 1/2
35 1/2
37
38 1/2
40 1/2
42 1/2
XS
S
M
L
XL
2XL
0
2
4
6-8
8-10
12
66
68
72
76
81
86
88
90
94
98
103
108
XS
S
M
L
XL
2XL
3XL
0
2-4
6-8
10
12-14
16
18-20
34 1/2
36 1/2
38 1/2
40 1/2
43
45 1/2
48 1/2
XS
S
M
L
XL
2XL
3XL
0
2-4
6-8
10
12-14
16
18-20
87.5
92.5
97.8
103
109.5
115.5
123
Size chart
in
cm
XS
S
M
L
XL
2XL
0
2-4
6-8
8-10
12-14
16
25
27
29
31
33 1/2
36
34 1/2
36 1/2
38 1/2
40 1/2
43
45 1/2
XS
S
M
L
XL
2XL
0
2-4
6-8
8-10
12-14
16
63.5
68.5
73.5
78.8
85
91.5
87.5
92.5
97.8
103
109.5
115.5
Size chart
in
cm
XS
S
M
L
XL
2XL
0
2-4
6-8
10-12
12-14
16
27 1/2
28 1/2
30
31 1/2
33 1/4
35 1/4
32 1/4
34
36
38
40
42 1/2
XS
S
M
L
XL
2XL
0
2-4
6-8
10-12
12-14
16
70
72.5
76.5
80.5
84.5
89.5
82
86.5
91.5
96.5
101.5
108
Size chart
in
cm
XS
S
M
L
XL
2XL
2
4
6-8
10-12
12-14
16
32
34
36
38
40 1/2
43
25
27
29
31
33 1/2
36
XS
S
M
L
XL
2XL
2
4
6-8
10-12
12-14
16
81.5
86.5
91.5
96.5
103
109.5
63.5
68.5
73.5
78.8
85
91.5
How to measure
Place the measuring tape around the fullest part of your chest directly under your arms.
Measure around your natural waistline at belly button level.
Measure around the fullest part of your body at the top of your leg.
With no shoes on, measure from the groin down to the floor.
Size chart
in
cm
28
30
31
32
33
34
36
38
28
30
31
32
33
34
36
38
34 1/2
36 1/2
37 1/2
38 1/2
39 1/2
40 1/2
42 1/2
43 1/2
28
30
31
32
33
34
36
38
71
76
78.5
81.5
84
86.5
91.5
96.5
84.5
92.5
95.5
98
100.5
103
108
110.5
Size chart
in
cm
XS
S
M
L
XL
28 1/2
30 1/2
32 1/2
34 1/2
38 1/2
35
37
39
41
44
XS
S
M
L
XL
72.5
77.5
82.5
87.5
97.5
89
94
99
104
111.5
Size chart
in
cm
XS
S
M
L
XL
2XL
36
38
40
42
45
49
28 1/2
30 1/2
32 1/2
34 1/2
38 1/2
42
XS
S
M
L
XL
2XL
91.5
96.5
101.5
106.5
114.5
124.5
72.5
77.5
82.5
87.5
97.5
106.5
Size chart
in
cm
XS
S
M
L
XL
2XL
36
38
40
42
45
49
28 1/2
30 1/2
32 1/2
34 1/2
38 1/2
42
31 1/2
32 1/4
33
33 3/4
34 1/2
35
XS
S
M
L
XL
2XL
91.5
96.5
101.5
106.5
114.5
124.5
72.5
77.5
82.5
87.5
97.5
106.5
80
82
84
86
87.5
89
How to measure
Place the measuring tape around the fullest part of your chest directly under your arms.
Measure around your natural waistline at belly button level.
Measure around the fullest part of your body at the top of your leg.
Measure from center back neck to wrist.
ButterFlow™ All Day Bra
Just added
Recently Viewed
Built for running and high-intensity training, it delivers medium-level support with a cool, breathable feel. Made with ButterFlow™ fabric, it stays smooth and stable through motion. A wide U-neckline and open back enhance airflow, while clean internal construction and a secure inner band help the bra stay comfortably in place—so you can move with focus and ease from start to finish.
KEY FEATURES
KEY FEATURES
●
ButterFlow™ fabric
●
Medium support
●
Cool-touch feel
●
Breathable mesh lining
●
Wide U-neckline
●
Open-back design
●
Wide, stay-flat straps
●
Removable pads
SIZE GUIDE
SIZE GUIDE
MATERIAL & CARE
MATERIAL & CARE
Material
Care

Wash with like colors (may bleed)

Do not soak

Use mild detergent

Wash cold (86°F or below)

Do not tumble dry

Do not dry clean

Remove bra pads before wash
SHIPPING & RETURN
SHIPPING & RETURN
Shipping
●
Standard shipping: $5
●
Express shipping: $15
Free shipping
●
Free standard shipping on orders over $50
●
Free express shipping on orders over $200
Returns
Returns are accepted within 30 days with a $10 return fee. If your order included a free gift, please return it with the item.
Product key features
Product Details

ButterFlow™ Performance Fabric
Lightweight and cool to the touch, ButterFlow™ is engineered for breathability and resilient stretch—designed to move smoothly with your body through high-movement training.

Wide, Stay-Flat Straps
Straps are engineered to remain flat and resist rolling, helping distribute pressure evenly for lasting comfort during movement.

Removable Pads for Performance
Soft, breathable pads are designed to stay in place during movement. Ensure the SYS symbols are centered when inserting the pads.
Experience ButterFlow™
Designed and made in Korea with 8 distinct styles from supportive bras and shorts to high-rise, flared, and wide silhouette bottoms.
Good Matches
Overall rating: 4.0 / 5 from 9 reviews.
Review topics: [].
"A size large is a great fit for a size C but nothing bigger than that. Comfortable for sure!"
"I'm 5'7" and wearing a size S here in the color dusk blue. This has become my go-to for longer runs because it actually stays put - no adjusting mid-stride. The open back and wide neckline make a real difference on warmer days when I'm pushing pace and just need things to breathe. This bra hits the balance of feeling secure without being restrictive - I don’t even think about it once I’m moving. (This review was written by SYS crew. )"
"The support feels true to size. It’s secure enough for running and high intensity sessions without feeling overly tight or restrictive. If you prefer a very compressive fit you might size down, but I stayed with my usual size and it feels stable while still comfortable. The shape is very flattering on, especially with the wide neckline and open back. Love the clean, balanced silhouette! Overall it feels breathable and it’s become a reliable piece I reach for when I want something supportive but still comfortable"
"Great fit. Comfortable set."
"This product was fine. Didn’t love. You can see the lines where the pads go which is gross. The straps are long."
"Fits true to size, could be more compressive."
"not as flattering as i would like, i will go for the square neck one next"
"I'm 5’10”, wearing a size S in Sandalwood Brown. This bra is soft, breathable, and gives just the right amount of support for workouts. The straps stay flat, the band holds everything everything in place comfortably, and the open back keeps me cool. Comfortable enough to wear all day. (This review was written by SYS crew. )"
"it is comfortable but not a flattering fit also as a 34 C cup I think i could size down to a small"