BOSS BLACK PERFORMANCE - Modern fits combined with innovative fabrics for a dynamic lifestyle - TECH WOOL - Best of both worlds, heritage wool with a performance twist. - RELAXED-FIT OVERSHIRT - RELAXED-FIT PERFORMANCE OVERSHIRT WITH SNAPS CLOSURE MACHINE WASHABLE - Wool blend - TECH-WOOL - Four-way strech - high stretch style for the best wearing comfort; Breathable - Breathable fabric for pleasant wearing comfort all day long; 24 Hour Performance - Ultimate performance 24h a day