Brands should compare T-shirt manufacturers by checking fabric type, GSM, shrinkage, neckline stability, shoulder construction, sleeve shape, body length, print technique, label options, and packaging support. For streetwear T-shirts, oversized fit, garment washing, graphic placement, and print durability are especially important. A manufacturer that only provides basic blanks may not be the right fit for a custom private label streetwear program. Before ordering, brands should review samples, confirm artwork files, approve fabric swatches, and define measurement tolerance.