The Flyweight Flannel is a distillation of the elevated, heritage-inspired craftsmanship that sets Relwen apart. It’s cut and sewn from a lightweight, 100% cotton flannel that’s brushed for immediate softness, while the mother of pearl buttons and single-needle seams that elevate the shirt’s look and bolster its durability. Relwen founder Jamie Rupp’s encyclopedic knowledge of heritage American sportswear shines through in the custom plaid patterns, produced exclusively for the brand.