How Often Should You Actually Buy New Underwear?

Most underwear fabrics consist of a combination of nylon, elastane, polyester cotton, and modal. "The fabric fibers themselves aren't always more or less durable per se — it's the specific fabric combinations and quality and the where and how the fabric was made that matters," Vosper said. In other words, it's more important to buy from brands that prioritize design, quality manufacturing, and craftsmanship than solely focus on purchasing a specific material.