Vintage 1930s Jantzen Blue Knit 1 Piece Romper Size S

Founded in Portland, Oregon in 1916, Jantzen became one of the most influential swimwear brands of the 20th century. The company helped define early resort and beach fashion, popularizing knitted swimsuits and athletic-inspired leisurewear long before they became mainstream. Vintage Jantzen pieces from the 1920s–1940s are highly sought after today for their quality construction, timeless silhouettes, and important place in fashion history.

Description

A rare and beautifully preserved vintage Jantzen knit one-piece romper in classic navy blue. This piece captures the streamlined elegance of early American sportswear with its fitted silhouette, scoop neckline, and narrow shoulder straps secured with signature button details. The substantial knit fabric provides structure while maintaining comfort, creating a flattering shape that feels remarkably modern despite its age.

Adding to its charm is a small embroidered decorative motif near the hem, a subtle detail often found on premium vintage swim and leisure garments from the era. Whether displayed as a collectible piece of fashion history or styled as a statement garment, this romper represents the golden age of American resortwear.

Pieces from this period are becoming increasingly difficult to find, especially in wearable condition and such a versatile color.

Estimated Measurements

• Bust: 32”–36”
• Waist: 26”–30”
• Hips: 34”–38”
• Length: 29”
• Rise: 25”

Estimated Size: Women’s Small

Styling Guide

Style it as a modern bodysuit with high-waisted trousers, wide-leg linen pants, or a flowing midi skirt. For a true vintage-inspired look, pair it with espadrilles, cat-eye sunglasses, and simple gold jewelry. It also makes an incredible layering piece beneath an oversized blazer or lightweight cardigan.

A genuine vintage Jantzen piece that blends fashion history, collectibility, and effortless wearability. The kind of archival garment that feels just as relevant today as it did nearly a century ago.