![Retro 40s Swimsuit/Swimwear (Jantzen) : Late 40s or early 50s -Jantzen- Mens dark blue wool and cotton blend textured high waist swim trunks with white cotton adjustable buckle belt and front cotton Retro 40s Swimsuit/Swimwear (Jantzen) : Late 40s or early 50s -Jantzen- Mens dark blue wool and cotton blend textured high waist swim trunks with white cotton adjustable buckle belt and front cotton](https://www.rustyzipper.com/full/214718.jpg)
Retro 40s Swimsuit/Swimwear (Jantzen) : Late 40s or early 50s -Jantzen- Mens dark blue wool and cotton blend textured high waist swim trunks with white cotton adjustable buckle belt and front cotton
![1940s Brockway Beach Bathing Suit | Vintage 40s Maroon Red Wool & Lastex Knit Mens Swimsuit Trunks with White Piping | Small/Medium/Large 1940s Brockway Beach Bathing Suit | Vintage 40s Maroon Red Wool & Lastex Knit Mens Swimsuit Trunks with White Piping | Small/Medium/Large](https://i.etsystatic.com/10849718/r/il/f6bfe2/4075180260/il_fullxfull.4075180260_etlv.jpg)
1940s Brockway Beach Bathing Suit | Vintage 40s Maroon Red Wool & Lastex Knit Mens Swimsuit Trunks with White Piping | Small/Medium/Large
KelownaMuseums - During the 1940s, a change in fabric manufacturing revolutionized bathing suits by giving them more elasticity. Men's swimsuits lost their tops, leaving behind high-rise briefs that covered the belly button.
![1930s mens and boys swimming trunks, beach shorts knitting pattern | Vintage knitting, Vintage knitting patterns, Swim trunks 1930s mens and boys swimming trunks, beach shorts knitting pattern | Vintage knitting, Vintage knitting patterns, Swim trunks](https://i.pinimg.com/474x/5f/9e/91/5f9e91477820afec65088bdf00c22844.jpg)