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Mid-size isn’t in-between. It’s the blueprint.

SISU is made for you—from first stitch to final fit.

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 Last Call: SISU Favorites Up to 65% Off

Saying Goodbye (And Making Room for More)

Tailored for Sizes 4-16

Designed for Movement

Ethically Made in the USA

Eco-Friendly Fabrics

Our Collection

Best SellerSave $130.00The Trinity Wrap Dress offers a flattering, slim-fit silhouette perfect for professional outfits. Its tailored shape and adaptable sleeve length make it ideal for women’s corporate wear, while convenient pockets add functionality for work wear needs.Experience elegance and ease in the Trinity Wrap Dress, designed for business casual settings. With its tailored fit, below-the-knee length, and functional pockets, this dress effortlessly blends style and practicality, making it a go-to for professional women
Trinity Midi Wrap Dress - Gentle Stretch Poplin Sale price$118.00 Regular price$248.00
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ReversibleSave $140.00Taylor Reversible Dress, designed with a reversible front-to-back feature, includes functional side pockets for added convenience. Perfect for professional and business casual settings, this dress offers style and versatility for women’s workwear.This versatile Taylor Reversible Dress is crafted to be worn both front and back, with functional pockets that add practicality to its polished look—ideal for women’s corporate wear and business casual outfits
Taylor Reversible - Stretch Performance Sale price$88.00 Regular price$228.00
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Save $109.00The Tenacity Pants are the ultimate dress pants for women, featuring a form-fitting design with recoverable stretch to accommodate various body shapes. A mid-rise waist and concealed contour waistband provide comfort and flexibility, while the tailored straight leg offers a polished look for professional settings.Designed for versatility, the Tenacity Pants boast a mid-rise waist and concealed contour waistband, delivering a comfortable, form-fitting silhouette. These dress pants for women offer recoverable stretch, ensuring a perfect fit across body types and a tailored straight-leg cut suitable for business casual attire
Tenacity Pant - Interlocking Performance Sale price$89.00 Regular price$198.00
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Save $40.00Journey V-Neck top with a flattering V-neckline and short sleeves, designed for work wear women prefer. A versatile piece that pairs effortlessly with both business casual and professional outfits.SISU Journey V-Neck, a soft, relaxed top with a comfortable fit, perfect for women’s corporate wear. Ideal for layering under blazers or wearing alone in business casual settings
Journey T-Shirt - Jersey Knit Sale price$28.00 Regular price$68.00
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Save $102.00The Virgo V-Neck Top brings modern elegance to professional outfits. Featuring a breathable, stretch poplin and a tailored feminine silhouette, this top transitions effortlessly from work wear to business casual, supporting comfort without compromising styleWith its lightweight poplin fabric and flattering loose fit, the Virgo V-Neck Top is a must-have for women’s corporate wear. The tailored v-neck and curved hem offer a refined look, perfect for business casual occasions and work-from-home comfort.
Virgo Pullover - Gentle Stretch Poplin Sale price$56.00 Regular price$158.00
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Save $88.00SISU Jade Asymmetrical Cowl Top is a sleeveless workwear top for women. Features a stylish draped neckline, perfect for business casual clothes for women and professional outfitsThe Jade Asymmetrical Cowl Top by SISU, a sleeveless top with a unique cowl neckline, is ideal for women's corporate wear and a polished, modern look for work wear women prefer.
Jade Asymmetrical Cowl - Gentle Stretch Poplin Sale price$50.00 Regular price$138.00
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PocketsSave $122.00SISU’s Jacquline Button-Up, an ideal piece for business outfits for women, featuring a structured collar, sleek button cuffs and pockets. This shirt offers comfort and professionalism, suitable for business casual clothes for womenJacquline Button-Up by SISU, a sophisticated collared shirt. Features a structured yet relaxed fit with long sleeves, button cuffs pockets, and a smooth, tailored silhouette. Crafted from comfortable, slightly stretchy fabric, ideal for both casual and professional settings
Jacquline Button Up - Gentle Stretch Poplin Sale price$66.00 Regular price$188.00
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Best SellerSave $180.00The Destiny Blazer offers a polished look with practical features for professional outfits, crafted from performance fabric that combines stretch and durability. With unique cuff slits to switch sleeve lengths and three discreet pockets, this blazer is ideal for business casual clothes for womenDesigned for the modern woman, the Destiny Blazer blends style and function with innovative stretch fabric and three functional pockets. Perfect for work wear, its adjustable cuffs transition from full to three-quarter sleeves, making it versatile for various corporate wear needs
The Destiny Blazer: Stretch Performance Sale price$148.00 Regular price$328.00
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SISU Jade Asymmetrical Cowl Top is a sleeveless workwear top for women. Features a stylish draped neckline, perfect for business casual clothes for women and professional outfits

About Our Clothing

At SISU, we don’t just make clothes - we engineer solutions.

Our garments combine flexibility and form, featuring 4-way stretch, tailored structure, and breathable, machine-washable fabrics sourced in the USA. They're built to move with you, hold their shape, and support real life—without extra effort.

We design in limited, intentional drops to reduce waste and ensure quality, using only ethical, eco-conscious production partners. And yes—our pockets are real. Because practicality should never be an afterthought.

From fabric to function, every detail is there for a reason. Because you deserve clothes that fit your body, your day, and your standards.

Built for Real Bodies. Ready for Real Life.

The core concept behind SISU is to redefine modern womenswear by filling the gap between luxury design and real-life functionality — especially for the in-between, underserved mid-sized woman who is often overlooked in both fit and fashion identity.

Our Story

“SISU is the first brand where I didn’t have to choose between my waist and my hips.”

Caucasian woman wearing white wrap-style dress

"When your clothes understand you, everything shifts."

Testimonials

"Infinite possibilities, looking forward to recreating a wardrobe with more pieces!"

- Debbie

"Taylor is my new Perfect LBD (little black dress)"

- Carla

"This will be my new travel collection. The wrap dress did not disappoint. AND THE POCKETS!!!"

- Victoria

Mid-size isn’t the middle. It’s the center.

Our fit model isn’t an afterthought. She’s the starting point. Each style is created specifically for women sizes 8–12 who deserve more than a compromise between straight and plus.

Strength Woven Into Every Stitch.

Every fabric we use is intentionally selected for its comfort, breathability, and long-term durability. Made in WRAP-certified facilities that uphold fair wages and ethical standards, our low-maintenance performance textiles are built to move with you.

Versatility Without Sacrifice.

From travel days to meetings to dinner out, our pieces are designed to adapt. With reversible styles, real pockets, and easy-care fabrics, SISU outfits flex with your life. No swaps or second looks needed.

Power in Every Piece.

our collection

The SISU Difference

Every detail is intentional. Every style is tested. This is clothing that actually fits—because it was made for you from the start.

Flexibility

Innovative fabrics provide exceptional performance and durability, complemented by tailored design lines that enhance versatility and style.

Effortless Care

Low-maintenance fabrics are machine-washable, breathable, and easy to care for. Making them last longer than fast-fashion materials.

Extra Pockets

Revisions to standard fashion designs to maximize the inclusion of pockets. Making apparel functional and fit for real life needs.

Designed By Women. For Women.

Function in Every Detail.

Made for Real Bodies.