Our paper is focused on translucence of daylight through micro-glass-bubbles. We applied Glass Micro Bubbles as outside thermal insulation on a cargo container and researched their influence on quantity of Daylight in interior. In the roof of the cargo container is a lengthwise roof skylight and its outside surface was coated of this innovative glass material. We used simple mono-cellular hollow spherical elements, known as the - Glass Micro Bubbles. They are made of borosilicate glass, which is resistant to water and is chemically stable. For this research we chose two identical cargo containers with a lengthwise roof skylight. Our input variables were - thin (2mm) external coating layer of Glass Micro Bubbles. Glass Micro-Bubbles were applied on the whole external surface of one of the container - including a roof skylight. Therefore, it was possible to measure translucence of daylight through the 2 mm layer of Glass Micro Bubbles on these two samples (containers). Our main question is: Is it possible to use this innovative material - Glass Micro Bubbles as outside thermal insulation in order to improve thermal and technical parameters and at the same time not to radically worsen daylighting parameters of indoor environment?