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Foundations
Juliette Seam Full Zip Jacket - Hazelnut MélangeJuliette Seam Full Zip Jacket - Hazelnut Mélange
Juliette Seam Full Zip Jacket - Hazelnut Mélange Sale price$239.00
Foundations
Valerie High Rise Legging 28" - Hazelnut MélangeValerie High Rise Legging 28" - Hazelnut Mélange
Valerie High Rise Legging 28" - Hazelnut Mélange Sale price$138.00
Foundations
Long Sleeve Tee - BlackLong Sleeve Tee - Black
Long Sleeve Tee - Black Sale price$88.00
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Foundation

Seamless design that feels like second-skin

Buy 3 or more items, get 20% off

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Bestsellers

Long Sleeve Tee - BlackLong Sleeve Tee - Black
Long Sleeve Tee - Black Sale price$88.00
24/7 Legging - Black24/7 Legging - Black
24/7 Legging - Black Sale price$118.00
Racerback Movement Bra - AcornRacerback Movement Bra - Acorn
Racerback Movement Bra - Acorn Sale price$88.00
High Rise Movement Legging - AcornHigh Rise Movement Legging - Acorn
High Rise Movement Legging - Acorn Sale price$124.00
Racerback Movement Bra - PearlRacerback Movement Bra - Pearl
Racerback Movement Bra - Pearl Sale price$88.00
High Waist Brief 3 Pack - PearlHigh Waist Brief 3 Pack - Pearl
High Waist Brief 3 Pack - Pearl Sale price$81.00
Eve Turtleneck Top - Hazelnut MélangeEve Turtleneck Top - Hazelnut Mélange
Eve Turtleneck Top - Hazelnut Mélange Sale price$139.00
Valerie High Rise Legging 28" - Hazelnut MélangeValerie High Rise Legging 28" - Hazelnut Mélange
Valerie High Rise Legging 28" - Hazelnut Mélange Sale price$138.00
Scoop Bra - BlackScoop Bra - Black
Scoop Bra - Black Sale price$88.00
High Rise Movement Legging - BlackHigh Rise Movement Legging - Black
High Rise Movement Legging - Black Sale price$124.00
Parker Oversized Sweatshirt - MarineParker Oversized Sweatshirt - Marine
Parker Oversized Sweatshirt - Marine Sale price$170.00
24/7 Short - Pebble24/7 Short - Pebble
24/7 Short - Pebble Sale price$88.00
Isabella Knit Sweater - LatteIsabella Knit Sweater - Latte
Isabella Knit Sweater - Latte Sale price$189.00
Eve Turtleneck Top - Grey MélangeEve Turtleneck Top - Grey Mélange
Eve Turtleneck Top - Grey Mélange Sale price$139.00
24/7 Short - Navy24/7 Short - Navy
24/7 Short - Navy Sale price$88.00
Cami Bodysuit - BlackCami Bodysuit - Black
Cami Bodysuit - Black Sale price$98.00
Cami Bodysuit - PearlCami Bodysuit - Pearl
Cami Bodysuit - Pearl Sale price$98.00
Essential Rib Comfort Sock - 2 Pack - Brown / KhakiEssential Rib Comfort Sock - 2 Pack - Brown / Khaki
Essential Rib Comfort Sock - 2 Pack - Brown / Khaki Sale price$34.00
High Neck Bra Top - OliveHigh Neck Bra Top - Olive
High Neck Bra Top - Olive Sale price$94.00
High Rise Movement Legging - OliveHigh Rise Movement Legging - Olive
High Rise Movement Legging - Olive Sale price$124.00
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Movement

Move with purpose, without compromise

French Terry

Rib Collection

Essential Layers

Isabella Knit Sweater - LatteIsabella Knit Sweater - Latte
Isabella Knit Sweater - Latte Sale price$189.00
Stevie Oversized Hoodie - Heather GreyStevie Oversized Hoodie - Heather Grey
Stevie Oversized Hoodie - Heather Grey Sale price$190.00
Maggie Wide Leg Pant - Heather GreyMaggie Wide Leg Pant - Heather Grey
Maggie Wide Leg Pant - Heather Grey Sale price$139.00
Parker Oversized Sweatshirt - MarineParker Oversized Sweatshirt - Marine
Parker Oversized Sweatshirt - Marine Sale price$170.00
Peggy Oversized Jogger - MarinePeggy Oversized Jogger - Marine
Peggy Oversized Jogger - Marine Sale price$129.00
Parker Oversized Sweatshirt - Heather GreyParker Oversized Sweatshirt - Heather Grey
Parker Oversized Sweatshirt - Heather Grey Sale price$170.00
Peggy Oversized Jogger - Heather GreyPeggy Oversized Jogger - Heather Grey
Peggy Oversized Jogger - Heather Grey Sale price$129.00
Isabella Knit Sweater - BlackIsabella Knit Sweater - Black
Isabella Knit Sweater - Black Sale price$189.00
Stevie Oversized Hoodie - MarineStevie Oversized Hoodie - Marine
Stevie Oversized Hoodie - Marine Sale price$190.00
Maggie Wide Leg Pant - MarineMaggie Wide Leg Pant - Marine
Maggie Wide Leg Pant - Marine Sale price$139.00
Joni 2-in-1 Puffer Jacket - PearlJoni 2-in-1 Puffer Jacket - Pearl
Joni 2-in-1 Puffer Jacket - Pearl Sale price$295.00
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SAISEI creates refined body wear through custom fabrics, seamless construction, and thoughtful design, bringing effortless comfort and elegance to everyday life.

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Measurement XS
US 0–2		 S
US 2–4		 M
US 6–8		 L
US 10–12		 XL
US 14–16
Waist (in) 25-27 27-29 29-31 31-37 37-40
Hip (in) 34-36 36-38 38-40 40-43 43-46
Chest (in) 32-34 34-36 36-38 38-40 40-42.5
If you are between sizes, for tighter look – size down, for looser look – size up.
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