Retroreflective material

A retroreflective material comprising:

• a fixing resin layer;
• a transparent microsphere embedded in the fixing resin layer;
• and
• a transparent resin layer and a reflective layer formed of a transparent metal compound thin film, between the transparent microsphere and the fixing resin layer, sequentially from the transparent microsphere side,
• the transparent resin layer having a layer thickness L(90°) of 400 to 1000 nm and having a ratio of a layer thickness L(30°) to the layer thickness L(90°) of 1.35 to 1.50, where:
• layer thickness L(90°)=Y(90°)−X(90°);
• layer thickness L(30°)=Y(30°)−X(30°);
• X(90°):
• a distance from a central point of the transparent microsphere to an interface between the transparent microsphere and the transparent resin layer in a 90° direction with respect to a plane direction;
• Y(90°):
• a distance from the central point of the transparent microsphere to an interface between the transparent resin layer and the reflective layer in the 90° direction with respect to the plane direction;
• X(30°):
• a distance from the central point of the transparent microsphere to the interface between the transparent microsphere and the transparent resin layer in a 30° direction with respect to the plane direction;
• and
• Y(30°):
• a distance from the central point of the transparent microsphere to the interface between the transparent resin layer and the reflective layer in the 30° direction with respect to the plane direction.