How Are Thumbholes Reinforced in Long-Sleeve Workout Tops?

Thumbholes need stable openings, comfortable positioning, and reinforced stress points.

Closures and edge details need compatible materials, stable attachment, and controlled dimensions. Check operation, symmetry, skin comfort, and dimensional change after care; small differences in feed tension or stabilization can create visible distortion even when the individual component meets its own purchasing specification. Test wrist movement and repeated dressing.