Hello, I would direct you to a manufacturer than a supplier, the benefits with working directly with the manufacturer is unlimited. Services of an apparel manufacturer company would be including custom dye fabric colours, cut sew screen printing ability to do full bleed prints, choosing your inks (especially water based inks rather than plastisol on gym & fitness clothing) custom labels, apparels can be custom manufactured in your own measurements all this at a lower price than a basic supplier and many more that I cannot list right now.
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AEM Textile