The choice of fabric determines the garment's hand-feel, durability, and market positioning. For premium fashion hoodies, prioritize 100% combed cotton or high-ratio cotton/polyester blends (e.g., 80/20) to ensure breathability and minimize pilling. Pay close attention to the GSM (Grams per Square Meter); a standard mid-weight hoody typically ranges from 280-320 GSM, while 'heavyweight' streetwear styles require 350-500 GSM. Additionally, verify the interior finish—French Terry is ideal for year-round layering, while Brushed Fleece provides superior warmth and a soft touch for autumn/winter collections.