First Kiss and Modal are both well-known underwear brands, and their underwear products have a certain share and reputation in the market. Which one is better mainly depends on the following aspects:

1. Material: Both First Kiss and Modal underwear products are made of high-quality fabrics, such as pure cotton, Modal, etc. But Modal fabrics are relatively softer, more comfortable, and more breathable.

2. Design: First Kiss and Modal’s underwear products are slightly different in design. First Kiss’s design is relatively simple and fashionable, while Modal’s design pays more attention to comfort and ergonomics.

3. Quality: Both First Kiss and Modal’s underwear products have high quality assurance, but Modal’s products are of relatively higher quality.

4. Price: The price of underwear products of First Kiss and Modal is relatively high, but the price of Modal is relatively higher.

In summary, both First Kiss and Modal underwear products have certain advantages and characteristics. Users need to choose according to their own needs and budget when choosing. If you focus on comfort and quality, you can choose Modal; if you focus on fashionable design and cost-effectiveness, you can choose First Kiss.