Pattern - Thread Theory - Cosmos Trunks Romper Sewing Pattern rayon jersey

rayon jersey

and jersey (jersey for hood lining if using thicker fabric)

eco-conscious formula that’s tough on dirt but gentle on fibers

the Isle Jeans pattern is beginner-friendly—complete with a detailed sew-along guide for step-by-step support

Close it with buttons or snaps for a polished look

Pattern - Thread Theory - Cosmos Trunks Romper Sewing Pattern rayon jerseyThe Thread Theory Cosmos Trunks sewing pattern is designed for a form fitting, comfortable boxer brief that moves with you. Featuring no center back seam, a reinforced inseam gusset, and a shaped front cup, these trunks fit like a second skin without rubbing or shifting. Short, athletic legs and a smooth elastic waistband create a streamlined silhouette suitable for wearing under slim fit pants, gym shorts, or casual wear. Ideal for creating a