YOUTHUP-Mens Apparel-Fruugo Flagship Store.[Comfy Fabric]: POLYESTER 100% - Water-Resistant And Quick-Drying, Lightweight Polyester Fabric, Due To Water-Repellent Feature, It Can Easily Get Up From The Water, Dry Quickly From The Wet. [Lining Fabric]: Mesh Inner Lining, All Seams Are Seamed, Breathable And Quick-Drying, Soft, Without Friction Or Irritation. [Version]: Adjustable Waist, Elastic Band With Drawstring, 15-18 Cm Stretch Is Possible, Relaxation And Comfort, Easy Tightening, Do Not Worry About Falling Off. [Care instruction]:Machine Wash [OCCASION]:All Water Sports Or Holiday Beach Activities. [NOTICE]: 1.The size chart is for reference only.There is an error of 1-3cm, which is a normal phenomenon.Please take the material object as the criterion. 2.Please note that slight color difference should be acceptable due to the light and screen.