Welded seams offer greater compressibility and better wet-weather performance than sewn seams. Patagonia uses two construction methods for stitch-free seams – one for waterproof shells and one for soft shells.
Welded Composite Seams – Waterproof Shells
Patagonia's advanced stitch-free construction for shells with a waterproof barrier (patent-pending) uses a form of sonic welding, reinforced with thin mesh and backed by flexible tape. This unique construction method minimizes weight, speeds dry time and reduces abrasion that can compromise fabric performance.
Glued Seams – Soft Shells
Patagonia soft shells with stitch-free construction use a lap-gluing technique. Stitch-free seams help speed dry times and reduce bulk to create the best performing soft shells possible.