Understanding streetwear size charts can be confusing because most labels ignore conventional measurements. Unlike traditional clothing brands that use consistent measurements across sizes, streetwear often relies on loose, oversized fits that changes with every collection. The first step to decoding these charts is to stop assuming that a medium in one brand equals a medium in another. Always check the detailed flat-lay dimensions, not just the marketing size. Most reputable streetwear companies offer exact garment dimensions with flat lay measurements for chest width, length, sleeve length, and sometimes hip or waist dimensions. Take a tape measure and measure a shirt you already own and that fits you well. Compare those numbers to the brand’s chart. For example, if your favorite fitted tee has a chest width of exactly 20 inches, look for a new item with a matching dimension even if it’s labeled as large or xxl. Many streetwear brands engineer their cuts for a relaxed drape, so a size large might be designed to drape loosely. If you prefer a tailored fit, you may need to size down. But if you want that street-ready volume, stick to the brand’s suggested fit or even select a larger option. Pay attention to the fabric too too. Natural fibers like cotton will relax over time, allowing for a better fit. Synthetics and blends usually don’t stretch, so accuracy matters more. Also, check customer feedback and ratings. Many shoppers will mention whether an item runs big or doudoune stone island homme small, which can be a better indicator than official specs. If a brand is unfamiliar, order two sizes if possible and return the one that doesn’t fit. Don’t rely on posed model shots because their physique and fit preferences differ from yours. Every brand has its own sizing logic, and figuring it out requires trial and error. But by tracking your personal measurements against brand specs and user insights, you’ll build a personal sizing database that eliminates uncertainty.