What’s Included: 3 New Balance Men's 6 Inch Boxer Brief Fly Front with Pouch. The sizes are available in Small (28-30 Inches), Medium (32-34 Inches), Large (36-38 Inches), X-Large (40-42 Inches) and XX-Large (44-46 Inches) Breathable, lightweight, and long-wearing, New Balance premium performance underwear are what lies beneath every activity. Made from performance fabrics polyester and spandex for maximum wearability and cool comfort.