Breathable clothing allows moisture vapor to escape, keeping you comfortable. If the fabric traps excess humidity inside your clothes while you're moving around in hot weather or stopping for an extended period of time - which happens often when camping outside- then they will become damp with sweat causing rapid cooling of body heat leaving people feeling chilly waiting too long before resuming activity again! This poses risks outdoors during cold seasons like winter where proper layering can be crucial if one goes on long hikes through snow covered forests