B2 Audio Swim Trunks Hit the water in style with the B2 Audio Swim Trunks—engineered for comfort, performance, and sustainability. Made from quick-drying, four-way stretch recycled polyester, these trunks are built for movement and breathability on the hottest days. The silky anti-chafe mesh liner keeps you comfortable from surf to sand, while mesh pockets and a hidden inner pocket keep your essentials secure. With UPF 50+ sun protection and an adjustable drawcord waistband, these trunks are ready for every summer adventure. Available in inclusive sizes up to 6XL. Fabric composition: 91% recycled polyester, 9% spandex Lining composition: 92% polyester, 8% spandex (in the US), and 90% polyester, 10% elastane (in the EU) Fabric weight (may vary by 5%): 5.13 oz/yd² (174 g/m²) Four-way stretch water-repellent microfiber fabric Anti-chafe mesh inner liner Elastic waistband with drawcord Mesh pockets Small inside pocket for valuables UPF 50+ protection Product sourced from China Size guide WAIST (inches) HIPS (inches) 2XS 28 ⅜ 35 ⅜ XS 29 ⅞ 37 S 31 ½ 38 ⅝ M 33 ⅛ 40 ⅛ L 36 ¼ 43 ¼ XL 39 ⅜ 46 ½ 2XL 42 ½ 49 ⅝ 3XL 45 ⅝ 52 ¾ 4XL 48 ⅞ 55 ⅞ 5XL 52 59 6XL 55 ⅛ 62 ¼