Joybuy Insights

Choosing women’s and men’s swimwear: how to avoid a disappointing purchase

Buying swimwear online seems simple, until a bikini shifts, swim shorts feel heavy or the size does not match your expectations. Anyone searching for women’s and men’s swimwear usually wants more than an attractive photo: the fit must be right, the material must suit how you intend to use it and the care instructions must be clear.

As a Joybuy Product Recommendation Officer, I mainly filter products based on verifiable information. So do not focus only on colour, brand or discount. The following pitfalls occur regularly.

Three common swimwear pitfalls

1. Relying solely on the size letter

An XS, M or XL is not the same across every brand. Always check the size chart, waist and hip measurements, and the type of fit. For example, a halter bikini with tie straps offers more adjustment options than a fixed top. With swim shorts, the waist measurement is particularly important.

2. Confusing marketing claims with a guarantee

Terms such as “quick-drying”, “shaping” or “durable” only tell you something if the product details specify the material and construction. According to the Reebok swim shorts product description, the fabric is made from 100% polyester and the models have an elasticated waistband with an internal drawstring. These are verifiable specifications. The stated performance in salt water, chlorine and UV exposure comes from the product description and should not be interpreted as a universal guarantee.

3. Ignoring care and intended use

Chlorine, salt water, sun cream and high temperatures can affect the lifespan of swimwear. A product that cannot be tumble-dried may be less practical if you travel often. Check the washing instructions before buying. For example, the Reebok models state that they should be washed at 30 °C and not tumble-dried. The Calvin Klein products also have specific care instructions; always check the label.

Important specifications to compare

Material and comfort

Synthetic fabrics such as polyester are common for regular swimming. They are lightweight and are often chosen for swim shorts and sporty models. Men’s swimming trunks or men’s swim shorts with a lining can provide extra coverage. Swim shorts with a drawstring help you adjust the waist, particularly when moving in the water.

For everyday underwear, you will see different material choices. According to the product information, the Calvin Klein Bikini 3 Pk. UB1 Black Women XS is made from 95% cotton and 5% elastane. The Calvin Klein ICON version in Heather Grey states 53% regenerative cotton, combined with modal and elastane. “Regenerative cotton” is a material claim made by the brand; check the full composition and care information before making sustainability a deciding factor.

Fit and coverage

A women’s bikini usually consists of a separate top and briefs, but the cut can vary considerably. A black bikini is easy to coordinate, while a push-up bikini may feature extra padding or a moulded effect. According to the product description, the Urban Classics black models have a halter top, crossed straps, a wrap-style front and a built-in push-up effect.

Also pay attention to the bottom half. Women’s bikini briefs can have a sporty, narrow cut, while a high-waisted style provides more coverage around the waist. If you are looking for greater freedom of movement, you can wear women’s swim shorts or high-waisted swim shorts over a bikini. According to the product listing, the Willit swim shorts in size 40 have a high waist, an inner brief and pockets. The models differ in their inside-leg length of 5 or 7 inches.

Intended use

For swimming lengths, a secure waist, good coverage and a material that does not quickly feel heavy are important. On beach days, freedom of movement may be less of a priority, while coordinating the item with a top, shirt or cover-up may matter more. For each product, check:

  • whether it has a lining;
  • adjustable straps or a drawstring;
  • waist height and leg length;
  • material percentage;
  • washing and drying instructions;
  • available sizes and colour options.

Our recommendations by user profile

Suitable for: Budget-conscious beginners
Ladies Bikini black M

Ladies Bikini black M

Why it suits this profile: This black Urban Classics bikini is a straightforward two-piece set for beach days, holidays and recreational swimming. The halter straps tie at the back.

How this product avoids the pitfall

The product information states the size, halter construction and push-up effect. However, check that size M is suitable for your own measurements.

Key benefit & advantages

Black colour, adjustable halter straps, ribbed wrap-style front and matching bikini briefs.

Suitable for: Shoppers looking for premium quality
Calvin Klein Bikini 3 Pk. UB1 Black Women XS

Calvin Klein Bikini 3 Pk. UB1 Black Women XS

Why it suits this profile: For anyone primarily looking for everyday underwear from a recognisable brand, with a mid-rise waist and a smooth finish under clothing.

How this product avoids the pitfall

The set states the exact composition of 95% cotton and 5% elastane, as well as being machine washable. This is underwear, not swimwear fabric.

Key benefit & advantages

3-pack, cotton-elastane blend, mid-rise fit and flat elastic edges.

Suitable for: Specific uses & intensive users
Mens Reebok Swimshort Yale Humble Blue L

Mens Reebok Swimshort Yale Humble Blue L

Why it suits this profile: This model is designed for men who use their swim shorts in the pool, on holiday and on active beach days. The waistband has an internal drawstring.

How this product avoids the pitfall

The product description specifies 100% polyester, an elasticated waist and an internal drawstring. The quick-drying claim comes from the brand’s product description.

Key benefit & advantages

Lightweight polyester, elasticated waist, adjustable drawstring and sporty blue design.

Looking for more options?

We have put together a complete, up-to-date list of products that fully meet these strict selection criteria and the applicable European safety regulations.

Care for a longer lifespan

Rinse swimwear with clean water after use, particularly after swimming in chlorinated or seawater. Follow the care label and avoid fabric softener unless it is recommended. Leave the fabric to air-dry and do not leave a bikini or swim shorts on a hot radiator for a long time. For underwear and shapewear, also use the temperature stated on the label. For example, a shaping bodysuit may require hand-washing and flat drying, which differs from the care instructions for many swim shorts.

If you are looking for sustainable lingerie, you can look for recycled or regenerative fibres, but also check the full material composition and lifespan. A material claim alone does not tell you how a product will perform in everyday use.

Frequently asked questions about women’s and men’s swimwear

Which swimwear is suitable for swimming in a pool?

Choose a style with a secure fit, sufficient coverage and a waistband that will not shift. For men, swim shorts with a drawstring can be practical. For women, adjustable straps or a sporty bikini top are useful when you are moving actively.

How do I determine the right bikini or swim shorts size?

Measure your waist and hips with a flexible tape measure and compare these measurements with the product’s size chart. Do not look only at XS to XL. With a bikini, bust measurement and strap length may also be important; with swim shorts, it is primarily the waist and inside-leg length.

How long does swimwear last?

This depends on use, material, exposure to chlorine and salt water, and care. Rinsing after use, washing according to the label and avoiding unnecessarily hot drying will help preserve the colour, elasticity and fit for longer. Check the fabric and seams regularly before swimming again.