90% Polyester, 10% Spandex Machine Wash What’s Included: 3 New Balance Men's 6 Inch Boxer Brief Fly Front with Pouch. The sizes are available in Small (29-31 Inches), Medium (32-34 Inches), Large (36-38 Inches), X-Large (40-42 Inches) and XX-Large (44-46 Inches) Ultimate Comfort: Made from 90% polyester and 10% spandex, these briefs are tagless and breathable, providing you with the ultimate comfort. A lightweight 4-way stretch supports your every move. Features: A quick wicking design and mesh gusset moves sweat away from your body which will keep you cool and dry. They are perfect for working out, running, skiing, skateboarding, football, baseball, basketball, tennis, volleyball, soccer, and hiking. Superior Design: These boxers feature an elastic waistband for added flex. These briefs also feature a “no-ride” inseam. You will not have to deal with uncomfortable bunching or irritation. How to Wash: Washer and dryer safe! Machine wash cold with like colors. Only non-chlorine bleach when needed. Tumble dry low. Do not iron.