Do men's trunks ride up or stay in place during the day?

Will it "slip up" during wear? – Key factors for stability

1. Fitted Cut and Anatomically Designed Pockets: Modern trunks feature ergonomically designed front pockets that maintain a distance between the crotch and body, reducing the risk of slippage due to friction.
The close-fitting cut creates a slight "second skin" during activity, enhancing support.
2. Elastic Waistband and Pressure-Free Waist Structure: A waistband woven from highly elastic fibers (such as spandex) provides stability without being too tight and leaving marks, preventing slippage due to waist loosening.
The soft waistband material remains elastic even in hot weather, preventing slippage caused by sweat.
3. Fabric Characteristics: The Softness and Resilience of Bamboo Viscose: Bamboo viscose is made using a chemical adhesive process. The fibers are soft and resilient, quickly returning to their original shape during movement, helping the underwear stay in place. This process utilizes chemically recycled fibers, rather than natural mechanical processing, ensuring the fabric's consistency and stability.
4. Shorter Design for Hot Weather
Compared to traditional boxer briefs, trunks are slightly shorter, ending only above the mid-thigh. This reduces the tendency to slip upwards due to large leg movements, making them particularly suitable for everyday wear in hot weather.

How to Choose the Right Size for Men's Trunk Underwear?

1. Refer to the Standard Waist Size Chart
Regular sizes are S, M, L, and XL, corresponding to waist circumferences of approximately 28-30 inches, 32-34 inches, 36-38 inches, and 40-42 inches (approximately 71-76 cm, 81-86 cm, 91-97 cm, and 101-107 cm), respectively. When purchasing, first measure your natural waist circumference, then refer to the chart to choose the closest size.
2. Consider the hip-to-leg ratio.
Trunk fabrics offer full hip coverage. If your hips are larger, it's recommended to choose a "+" or "=" size (e.g., M+, L=). These sizes provide wider hip coverage for the same waist size, preventing the fabric from riding up due to tightness.
3. Check the "second skin" feel during fitting. When trying on, feel if the fabric fits snugly but not constrictingly, if the waistband fits evenly, and if the crotch pockets provide natural support. If there are noticeable gaps or indentations, the size is too large or too small and needs adjustment.
4. Choose based on usage scenario and climate.
In high temperatures or during exercise, prioritize fabrics containing bamboo viscose, as their moisture-wicking properties are superior to pure cotton, helping to keep you dry and improving comfort. In cold environments, consider fleece or thicker fabrics for enhanced warmth.