These black relaxed-fit sweatpants from Protocol Index feature bold streetwear detailing: a embroidered Union Jack flag with 'GREAT BRITAIN' text and large white numeral '3' on the left thigh, plus elegant gold cursive 'Protocol Index' script running down the right leg. The garment is crafted from soft, brushed cotton-blend fleece for all-day comfort, with an elasticated waistband, adjustable drawstrings, and ribbed cuffs. A layered presentation shows three waistband variations—plaid brown, navy with red/white stripes, and solid black—suggesting a modular or multi-look design. Ideal for casual streetwear styling, lounging, or athleisure wear, the pants balance heritage-inspired motifs (UK flag) with modern luxury typography. The gold embroidery adds premium contrast against the matte black base, while the loose, tapered silhouette ensures mobility and contemporary fit. Perfect for urban daily wear, weekend outings, or layering under oversized outerwear in fall/winter seasons.