This vest is perfect for wearing under a school uniform. The light fabric feels invisible, yet remaning effective. Fully brushed inside for extra warmth & softness. Ribbed fabric for added stretch and comfort. Body contouring guaranteed perfect fit. Excellent wicking rate draws sweat away from your skin. Cosy & warm but lightweight thermal material. Side seam free for added comfort / Ideal for school, camping trips etc. Easy care home machine wash at 40C. Maintains warmth even after many washes.