1. Different functions

Swimming suits should be suitable for underwater sports, which requires them to be waterproof, elastic, and have minimal resistance to water during underwater activities. To achieve this, swimsuits are designed to be very tight fitting. The main function of underwear is to protect women's breasts, providing support and shaping, and the production process is relatively complex. It is comfortable to wear and should not be too tight, so it is skin friendly, breathable, and has good moisture absorption, keeping the skin dry at all times.

2. Different fabrics

The material selection angle for swimsuits and underwear is completely opposite, mainly reflected in the hydrophilicity of the fabric. Swimwear is commonly made of waterproof and elastic fabrics such as DuPont Lycra, nylon, and polyester, while underwear is mostly made of pure cotton fabric with good water absorption.

3. Different appearance

The swimsuit is worn externally, with a focus on visual effects in design. The material is relatively thick, the appearance is fashionable, and there are various styles and patterns. And when worn inside, the material is lighter and thinner, mainly in solid colors, and there are not as many styles as swimsuits.

4. Different management methods

After swimming, it is necessary to clean the swimsuit in a timely manner, otherwise it may affect the elasticity and color of the swimsuit, resulting in fabric relaxation and fading. When cleaning swimsuits, warm water must be used, otherwise deformation may occur. It is best to control the water temperature at around 20 degrees Celsius. After cleaning, it is necessary to use a dry and shady drying method and not expose it to direct sunlight. And underwear is different, using hot water to clean has always been the most commonly used cleaning method for underwear. Boiling hot water and exposure to sunlight are the most effective ways to sterilize underwear.

So, swimsuits cannot be worn as underwear, and underwear cannot be worn as swimsuits either. Swimwear is usually only worn during summer swimming, while underwear is worn all year round. Swimwear cannot replace underwear because it does not have the breathability and moisture absorption of underwear. Similarly, underwear cannot replace swimwear because underwear does not have the waterproof properties of swimwear, and pure cotton underwear becomes semi transparent after absorbing water, which can easily cause awkward situations.