McWilliam is an Irish bag maker founded in 1971 from a sailmaking business in Crosshaven, County Cork.

Its holdalls, totes and washbags are cut and stitched by hand in its Crosshaven workshop, with a focus on durability, repairability and long-term use.

The range includes plant-based PVC and high-performance sailcloth, and McWilliam has been a Certified B Corporation since 2025.