Mark Gu is the founder of Hidden Stitch Supply, an independent online heritage menswear retailer based in Melbourne, Australia. His work centres on finding well-made clothing at accessible prices and explaining the fabric, construction and fit details that help customers choose with confidence.

Mark started the business after discovering heritage clothing on Chinese marketplaces. He found garments that offered strong value, alongside language barriers, unclear product descriptions and unfamiliar sizing. After leaving his corporate job, he launched Hidden Stitch Supply in September 2026 to make these clothes easier to discover and understand.

He manages product selection, photography, sizing documentation and the shop's written and video content. His interests include selvedge denim, traditional workwear, military-inspired clothing and the practical details behind familiar garment designs. He keeps the range deliberately small, selecting pieces for their materials, construction, usefulness and value.

Through product reviews and Hidden Stitch Supply's 'The History of' editorial series, Mark explores both contemporary garments and their origins. His content covers subjects such as denim, chore coats, waxed jackets and OG-107 fatigue pants.

His approach is practical: describe what a garment offers, explain its fit and trade-offs, and give customers useful information before they buy.