GMPC LLC

GMPC LLC is an American full-service private label manufacturer specializing in headwear, apparel and accessories. Founded in Los Angeles in 1974 by Gary Mandel, the company designs, develops, sources and produces custom products for brands across outdoor and performance, action sports, streetwear, fashion retail, theme parks and resorts, health and beauty, and corporate identity markets. Its services span trend reports, design and merchandising, product development, sourcing and compliance, quality control, and logistics — described by the company as a full 'white glove' service. GMPC's origin story centers on a 1975 request from Honda Motorcycles for a satin jacket for its team riders. Rather than supplying a stock item, GMPC presented a fully custom design and then traveled to China to establish manufacturing there, at a time when very few companies were producing apparel and accessories in Asia. That early move built relationships and roots in Asia that the company says have flourished for nearly 50 years. Today GMPC operates design studios and offices in New York City, Los Angeles, San Francisco and Shanghai, and describes itself as one of the largest suppliers of headwear and fashion accessories. Its product capabilities include caps, beanies, cut-and-sew headwear, fashion hats, bags, gaiters, gloves and mittens, graphic tees and lifestyle apparel, in materials ranging from technical waterproof/breathable laminates to performance moisture-wicking and windproof knits. It also offers a dedicated sustainable apparel and accessories collection made with organic and recycled fibers, supported by a Workplace Code of Conduct and factory audits available on request. The company remains privately held and continues to position itself as a turn-key partner for brands seeking to extend their identity through private label accessories and apparel.

GMPC's story begins in Los Angeles in 1974, when founder Gary Mandel set out to provide customers with higher-quality, bespoke products and accessories than existing design and manufacturing resources allowed. Mandel believed every item GMPC created should both embody and enrich the brand it was connected to, and he identified a world-class design team, deep product expertise and international manufacturing capabilities as the keys to that vision. The turning point came in the fall of 1975, when Honda Motorcycles asked Craig Stanman, a GMPC account executive, for a satin jacket for its team riders. Instead of offering an existing stock jacket, GMPC presented a fully custom design. The response was strong enough that Mandel and Stanman traveled east to determine how to manufacture the jacket in China — at a time when, as Mandel later recalled, virtually no one was manufacturing apparel and accessories there. That first trip resulted not only in completing the Honda project but also in establishing roots and relationships in Asia that the company says have flourished and expanded for nearly 50 years. Over the following decades GMPC grew into an industry-leading, full-service design and production resource for top brands around the world. It built in-house design studios — three of them, according to the company — that produce seasonal trend forecasts and creative resources for clients. It developed long-standing partnerships with leaders in the outdoor and performance market, expanding their private label graphic tee, lifestyle and performance headwear categories, and it became a specialist in streetwear, working with influential tastemakers and boutique brands on custom headwear including cut-and-sew headwear, beanies and fashion hats. The company's capabilities broadened across the full spectrum of accessories — bags, hats, caps, beanies, gaiters, gloves and mittens — in materials including technical waterproof/breathable laminates and performance moisture-wicking, windproof knits. GMPC also developed a sustainable apparel and accessories collection using organic and recycled polyester fibers, backed by a Workplace Code of Conduct and factory-specific audits and certifications available on request. Today GMPC operates from New York City, Los Angeles, San Francisco and Shanghai, describing itself as one of the largest suppliers of headwear and fashion accessories, with a global network supporting pricing and quality needs. It continues to offer a full 'white glove' service covering trend reports, design and merchandising, product development, sourcing and compliance, quality control, and logistics, positioning itself as a turn-key partner for brands seeking to extend their identity through private label accessories and apparel.

• 2025

  GMPC releases its Semi-Custom 2025 Collection of customizable headwear.

• 1975

  Honda Motorcycles requests a custom satin jacket for its team riders; GMPC delivers a fully custom design and travels to China to establish manufacturing.

• 1974

  GMPC founded in Los Angeles by Gary Mandel.

Full-service, turn-key private label design and production partner for premium headwear, apparel and accessories.

• Semi-Custom Headwear Collection

  Curated selection of customizable headwear featuring best-selling, on-trend profiles; minimum order quantities start at 300 units per style/color.

• Sustainable Apparel & Accessories Collection

  Crafted from high-quality fabrications made with sustainable fibers, designed for durability and produced under a Workplace Code of Conduct.

• Private label headwear

  Caps, beanies, cut-and-sew headwear and fashion hats for streetwear, outdoor, action sports and other markets.

• Private label accessories

  Bags, gaiters, gloves and mittens in technical and performance materials.

1. 1GMPC | Full Service Private Label Manufacturinggmpc.com
2. 2Streetwear | GMPC | Full Service Private Label Manufacturinggmpc.com
3. 3Outdoor & Performance | GMPC | Full Service Private Label Manufacturinggmpc.com
4. 4Our Story | GMPC | Full Service Private Label Manufacturinggmpc.com
5. 5GMPC LLCwikidata.org