Sondico base layer vest mens this sondico base layer vest is a great item to wear when training in cold weather to keep warm and perform to your best it has a crew neck with a sleeveless design elasticated fabric and an internal rubberised waistband to offer a close fit the top benefits from mesh panelling to the sides for ventilation and optivent technology which draws sweat away from the body to keep you cool and dry sondico branding to the front and back completes the look mens b