Plus size onesie

136 products
Price, low to high Price, high to low Title, A-Z Title, Z-A Date, old to new Date, new to old Best Selling
tricolour women onesie
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Sofa Killer tricolor onesie SUNNY with yellow sleeve – Adult Onesie, Premium Loungewear
From €97.90
Sofa Killer tricolor onesie VINTAGE modeled by a woman, featuring a light pink and teal color combination, with a hood and pockets, perfect for comfort and casual style.
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Sofa Killer tricolor onesie VINTAGE – Adult Onesie, Premium Loungewear
From €97.90
tricolour men onesie
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Sofa Killer tricolor onesie SUNNY with yellow sleeve – Adult Jumpsuit, Premium Loungewear
From €97.90
sofa killer onesie
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Sofa Killer tricolor onesie Grey – Adult Jumpsuit, Premium Loungewear
From €97.90
sofa killer onesie
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Sofa Killer tricolor onesie Grey – Adult Jumpsuit, Premium Loungewear
From €97.90
dark grey onesie with zipper in the back
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Sofa Killer dark grey onesie with a zipper in the back – Adult Jumpsuit, Premium Loungewear
From €93.50
sofa killer onesie
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Sofa Killer tricolor onesie Racing – Adult Jumpsuit, Premium Loungewear
From €97.90
grey men onesie sofa killer
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Sofa Killer dark grey onesie with grey cuff – Adult Jumpsuit, Premium Loungewear
From €86.90
sofa killer velours women onesie
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Sofa Killer dark grey velours onesie – Adult Jumpsuit, Premium Loungewear
From €86.90
white as in photogreywhite
grey women onesie
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Sofa killer grey onesie with light grey applications CREAMY – Adult Onesie, Premium Loungewear
From €97.90
grey women nordic onesie sofa killer
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Sofa Killer dark grey onesie with Nordic applications – Adult Jumpsuit, Premium Loungewear
From €97.90
Sofa Killer tricolor onesie Lagoon worn by a woman, featuring a stylish combination of blue stone, light pink, and sand colors, showcasing a cozy casual look perfect for lounging.
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Sofa Killer tricolor onesie Lagoon – Adult Jumpsuit, Premium Loungewear
From €97.90
sofa killer velours women onesie
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Sofa Killer dark blue velours onesie – Adult Jumpsuit, Premium Loungewear
From €86.90
sofa killer onesie
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Sofa Killer tricolor onesie LTU – Adult Jumpsuit, Premium Loungewear
From €97.90
Tricolor women onesie Mint by Sofa Killer features a stylish combination of turquoise, dark grey, and light grey, shown on a model standing confidently.
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Sofa Killer tricolor women onesie Mint – Women Onesie, Premium Loungewear
From €97.90
all black onesie with zipper in the back
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Sofa Killer all black onesie with a zipper in the back – Adult Jumpsuit, Premium Loungewear
From €93.50
sofa killer onesie
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Sofa Killer royal blue onesie – Adult Jumpsuit, Premium Loungewear
From €86.90
sofa killer velours women onesie
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Sofa Killer emerald green velours onesie – Adult Jumpsuit, Premium Loungewear
From €86.90
Model wearing the Sofa Killer tricolor onesie Sunset in yellow, washed green, and light grey, showcasing a cozy and stylish adult jumpsuit.
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Sofa Killer tricolor onesie Sunset – Adult Onesie, Premium Loungewear
From €97.90
sofa killer onesie
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Sofa Killer tricolor onesie Racing – Adult Jumpsuit, Premium Loungewear
From €97.90
Stylish model wearing the Sofa Killer tricolor onesie Groove in dark green, royal blue, and violet, showing a relaxed pose.
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Sofa Killer tricolor onesie Groove – Adult Jumpsuit, Premium Loungewear
From €97.90
Sofa Killer women onesie with floral prints Tropical, featuring a model showcasing a vibrant tropical design with green cuffs, perfect for lounging or casual outings.
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Sofa Killer women onesie with floral prints Tropical – Women Onesie, Premium Loungewear
From €97.90
grey women onesie sofa killer
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Sofa Killer dark grey onesie with light grey cuff – Adult Jumpsuit, Premium Loungewear
From €86.90
Sofa Killer tricolor onesie VINTAGE worn by a model, featuring a light pink and teal color block design with an attached hood, standing against a stylish textured wall.
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Sofa Killer tricolor onesie VINTAGE – Adult Jumpsuit, Premium Loungewear
From €86.90

Plus Size Onesies – Premium Loungewear from 4XL to 6XL

The Sofa Killer Plus Size Onesie Collection celebrates comfort without compromise. Each adult jumpsuit is handmade in Europe from premium 280 gsm cotton jersey or soft velour fabric, designed to fit and flatter every shape. With inclusive sizing from 4XL to 6XL and custom-fit options, our plus size loungewear keeps you warm, confident, and free to move.

Choose from best-selling tricolor onesies such as Sunny, Vintage, Racing, and Lagoon or minimalist favorites like Grey, Dark Blue, and Velour designs. Each piece features double-stitched seams, practical pockets, and cozy hoods — combining durability with the signature Sofa Killer relaxed style. If you don’t see your perfect fit, just contact us — we can make it happen.

Pair your plus size onesie with men’s loungewear, women’s loungewear, or matching family onesies for complete comfort across all sizes. Every Sofa Killer piece carries our red tag — the mark of quality, sustainability, and inclusive design.

Sofa Killer redefines plus size loungewear: soft, stylish, and made to fit every body beautifully.