Questions & Answers1) Q: What is the feature of these Compression Swim Trunks?A: 2 in 1 designed with lightweight outer layer and breathable lining, Compression shorts support the private protection, reduce the risk of bruising and protect your legs during activities. There are still water repellent and UV protection will enhance your wearing2) Q: What is the inseam length on these?A: Approximately 5.5''~6'', depends on different sizes. If you're looking for a modern fit not looking like a long baggy board shorts, above knee length is the style you're looking for.3) Q: Is the waist elastic?A: Yes, with adjustable drawstring. If you prefer more stretch swim trunks, welcome to our store and we have many stretchy swim trunks to choose, and mesh liner available.Size chart: Size:XS Waist:63-70cm/24.80-27.56''Size:S Waist:71-79cm/27.95-31.10''Size:M Waist:80-89cm/31.50-35.04''Size:L Waist:90-99cm/35.43-38.98''Size:XL Waist:101-110cm/39.76-43.31''