Zebra 斑馬牌 - Double Sided Flexible Highlighter Pen - MILD RED 紅色 - WKT7-MR X 2
https://www.friendstore.com.hk/shop/wkt7-mr-zebra-ban-ma-pai-double-sided-flexible-highlighter-pen-mild-red-hong-se-wkt7-mr-x-2-10856
https://www.friendstore.com.hk/web/image/product.template/10856/image_1920?unique=8deacbd
Line Thickness: Bold - 4mm, Fine - 1.0-1.4mm