swimsuit

A swimsuit is a garment worn for swimming and other water activities. It is designed to fit closely, stay in place in water, and provide modesty and support. Modern swimsuits are typically made from synthetic fabrics such as nylon, polyester, and elastane (spandex), chosen for stretch, durability, and resistance to chlorine. They are produced in a wide range of styles for different ages, genders, and activities.

Common styles include one-piece suits, bikinis (two-piece), tankinis (tank top with bottom), and monokinis. Men's options include swim trunks and briefs, while women's suits range from strapless and halter-neck to racerback and high-waisted designs. Competitive swimwear emphasizes reduced drag with tight, form-fitting cuts and performance fabrics.

Historically, swimwear evolved from full-body garments in the 19th century to lighter designs in the 20th century. The bikini, a two-piece suit, was introduced in 1946 by Louis Réard and named after the Bikini Atoll. Its popularity helped shift fashion norms and spurred ongoing innovations in fit and coverage.

Fabric technology and construction influence fit and longevity. Elastane provides stretch; polyester and nylon offer strength and colorfastness. Chlorine and sun exposure can degrade fabrics over time. Care typically includes rinsing after use and following washing instructions to preserve elasticity and color.

In sports and public settings, swimsuit choices are influenced by cultural norms, modesty considerations, and competition regulations that govern fabric, coverage, and fit.