Sondico base layer vest junior boys this sondico base layer vest is perfect for layering up in colder temperatures it has a crew neck with a sleeveless design elasticated fabric and an internal rubberised waistband for a closer fit the top benefits from mesh panelling to the sides for ventilation and optivent technology which draws sweat away from the body to keep the wearer cool and dry sondico branding to the front and back completes the look boys base layer top crew neck sl