Buy 3 Get Free Shipping / Buy 3 Get the 4th Free Materials: 80% Nylon, 20% Spandex. Mesh Lining: Soft smooth inner mesh lining make you feel comfortable when playing on the beach or swimming. Custom Fit: Elastic Waistband with Drawcord for maxium comfort and fit. 2 Hand Pocket: Perfect for storing keys, or any other small items. Square Leg Design: Comfy Compression fit, this swim briefs is perfect for. swimming, surfing, relaxing in the sun, beach or pool play, all water sports.