The elastic material adjusts flexibly during movement. It does not restrict or press when worn. Adjust the length and width of the belt with a cable tie. You can wear the hi-viz cross over a thick layer of winter clothing. The length of the straps provides enough room for adults to wear it. The simple fastening in the middle is solved with a plastic clip. To release the connection, press the two buckle tabs together. When worn, the buckle secures the cross firmly and does not release spontaneously.