MATERIAL - 100% polyester. The swim trunks are breathable, lightweight, comfortable, quick-drying, durable, and pill-free. DRAWSTRING AND POCKETS - Elastic waist with drawstring can stretch and fix the waist for comfort and adjustability. The swim trunks have a right back pocket and pockets on both sides. You can put some small items like mobile phones and keys, making it more convenient for you to go out. MESH LINING INSIDE: Loose swim trunks with mesh lining are more breathable, comfortable, and not see-through, giving you an excellent user experience. It is the best gift for your family, friends, and classmates, and they will love it. Size: M-XXL available. You can choose to buy according to our size chart. OCCASION - Suitable for various sports and beach activities, such as swimming, beach vacation, volleyball, bathing, surfing, walking, jogging, running, gym.