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Square Neck Long Sleeve Active Jumpsuit

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100% rayon — soft and breathable
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Self–tie waist for an adjustable fit
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Flattering V–neckline and button–down front
Regular Price
$39.26
Sale Price
$39.26
Regular Price
Sold Out
Unit Price
per 

Color: Black

Size: S

Use the charts below to find your size. All measurements are body measurements, not garment measurements — measure yourself and match to the closest size.

Please note: Fit varies by cut, fabric and stretch, even within the same size. Where a product page lists its own measurements or a fit note, always follow those first. If you are between sizes, size up in woven fabrics and size down in heavy stretch.

Women's Clothing

Tops, dresses, jackets and knitwear.

Size US UK EU Bust (in) Bust (cm) Waist (in) Waist (cm) Hip (in) Hip (cm)
XS 0–2 4–6 32–34 31–32 78–83 24–25 60–65 33–35 84–89
S 4–6 8–10 36–38 33–34 83–88 26–27 65–70 35–37 89–94
M 8–10 12–14 40–42 35–37 88–94 28–30 70–76 37–39 94–100
L 12–14 16–18 44–46 37–40 94–101 30–33 76–83 39–43 100–108
XL 16–18 20–22 48–50 40–43 101–109 33–36 83–91 43–46 108–116
2XL 20–22 24–26 52–54 43–46 109–117 36–39 91–99 46–49 116–124
3XL 24–26 28–30 56–58 46–49 117–125 39–42 99–107 49–52 124–132

Denim & Jeans

Denim is sized by waist. Many of the brands we carry — including Judy Blue, RISEN and KanCan — label sizes as a number followed by the waist measurement, for example 7(28).

Denim Size Waist (in) Waist (cm) Hip (in) Alpha
0 (24) 24 61 34 XS
1 (25) 25 64 35 XS
3 (26) 26 66 36 S
5 (27) 27 69 37 S
7 (28) 28 71 38 M
9 (29) 29 74 39 M
11 (30) 30 76 40 L
13 (31) 31 79 41 L
14W (32) 32 81 43 XL
16W (34) 34 86 45 XL
18W (36) 36 91 47 2XL
20W (38) 38 97 49 2XL
22W (40) 40 102 51 3XL
24W (42) 42 107 53 3XL
Tummy-control denim: Styles with a tummy-control waistband run more generous than standard denim. If you are between sizes in these, size down — the compression panel adds structure and takes up the extra room.

How to Measure

Use a soft tape measure over your underwear, not over clothing. Keep the tape level and snug, but not tight enough to compress.

  1. Bust — measure around the fullest part of your bust, keeping the tape level across your back.
  2. Waist — measure around the narrowest part of your natural waist, usually just above the belly button. Don't hold your breath.
  3. Hip — stand with your feet together and measure around the fullest part of your hips and seat.
  4. Inseam — measure from the top of your inner thigh down to where you want the hem to fall, in the shoes you plan to wear.

Still Between Sizes?

If you land between two sizes, the fabric decides it:

  • Woven, non-stretch (most shirts, blazers, structured dresses) — size up.
  • Heavy stretch (leggings, ponte, tummy-control denim) — size down.
  • Oversized or relaxed styles — take your usual size; the extra room is already built in.

Still not sure? Email info@easthillscasuals.com with the item and your measurements and we'll tell you which size to order. Returns are free and easy for 30 days, so it's fine to order two sizes and send one back.

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Your New Favorite Active Wear: Square Neck Long Sleeve Active Jumpsuit

Meet the Square Neck Long Sleeve Active Jumpsuit – your perfect partner for every workout, yoga session, or casual outing. Designed with comfort and style in mind, this jumpsuit is crafted from a blend of 75% nylon and 25% elastane, providing exceptional stretch and a flattering fit that moves with you. Whether you're hitting the gym or relaxing at home, you'll feel supported and stylish.

The chic square neckline and long sleeves give it a modern look that transitions easily from an active lifestyle to a day out with friends. Imagine the way you’ll look and feel, with the lightweight fabric allowing you to stay cool and comfortable, while the sleek silhouette enhances your natural shape.

  • Highly Stretchy: Feel unrestricted with every stretch and bend.
  • Easy Care: Just machine wash cold and tumble dry low for effortless maintenance.
  • Imported Quality: Designed with care to ensure durability and style.

This jumpsuit has quickly become a favorite among our customers. “I wear it for everything – from workouts to brunch! It’s so comfortable, I never want to take it off!” one satisfied customer shares.

Don’t wait to enhance your activewear collection. Grab your Square Neck Long Sleeve Active Jumpsuit today and experience the perfect blend of style and functionality. Feel confident, look fabulous, and embrace every movement!

Square Neck Long Sleeve Active Jumpsuit
Square Neck Long Sleeve Active Jumpsuit
$39.26
Color:  Black color
Size:  S
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FREE SHIPPING OVER $50
Easy 30-Day Returns
Inclusive Size Range

WHY IT'S WORTH KEEPING.

What goes into every piece we stock…

FABRICS THAT LAST

Chosen for weight, softness and recovery — so pieces keep their shape wash after wash.

TRUE SIZE RANGE

Full size runs from XS through 3XL, cut for real bodies rather than stretched from a sample size.

FLATTERING SILHOUETTES

Proportioned to skim rather than cling, with rises and lengths that work across body types.

FIT HELP BEFORE YOU BUY

Detailed size charts, honest fit notes, and free 30-day returns if the size isn't right.

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Rated 4.9/5 by 90+ Happy Customers

FROM THE WOMEN WEARING THEM

We let our customers do the talking.

BEST TOPS EVER

“The tops are soft, stylish, and flattering. I get compliments every time I wear them!”

Jessica L., 34

Love My Outfit!

“Absolutely adore my dress! Fits perfectly, super comfy, and makes me feel confident all day.”

Samantha R., 28

Wardrobe Upgrade

“East Hills Casuals has completely changed my everyday style. Chic, comfy, and affordable!”

Mia K., 25

Can’t Stop Wearing

“These outfits are so versatile! I wear them to work, brunch, and weekend outings.”

Olivia T., 31

Ethical & Stylish

“I love that the clothes are sustainably made. Look good, feel good, confident always.”

Emily S., 29

WE THINK YOU’LL ALSO LOVE…

Looking for more like this? Check out these fab pieces.

Rated 4.9/5 by 90+ Happy Customers

Frequently Asked Questions

The things shoppers actually worry about — answered.

VIP Deals & Updates
FREE SHIPPING OVER $50
Easy 30-Day Returns
Inclusive Size Range