First Kiss and Modal are well-known underwear brands, and their underwear products have a certain share and reputation in the market. Regarding which is better, we mainly look at the following aspects:

1. material: first kiss and modal underwear products are made of high-quality fabrics, such as pure cotton and modal. But modal fabrics are relatively softer, more comfortable and more breathable.

2. Design: The underwear products of First Kiss and Modal are slightly different in design. The first kiss design is simple and fashionable, while modal's design pays more attention to comfort and ergonomics.

3. Quality: Both the first kiss and modal's underwear products have high quality assurance, but modal's products are relatively higher in quality.

4. Price: First kiss and modal underwear products are more expensive, but modal's price is relatively higher.

To sum up, both the first kiss and modal underwear products have certain advantages and characteristics, and users need to choose according to their own needs and budgets when choosing. If you pay attention to comfort and quality, you can choose modal; If you pay attention to fashion design and cost performance, you can choose the first kiss.