What Makes a Training Jacket Suitable for Warm-Up Activities?

Warm-up jackets need suitable mobility, thermal comfort, and easy layering.

Training layers need a balance of movement, coverage, and compatibility with garments worn underneath. Evaluate the selected construction on representative wearers in the intended layering combination; a standing fit assessment can miss restriction, riding-up, or pressure that appears during repeated upper-body movement. Test transitions between rest and activity.