The term high visibility is thrown around a lot when were talking about safety, but what exactly does it really entail and when is it necessary? Hi viz clothing for kids rlmusicservices for construction workers and for cyclists all serve different functions, but the core idea is the same. The clothes are meant to keep them safe and protect them from harm. When talking about high visibility clothes its important to understand exactly what it is. These clothes are made from materials that are fluorescent and the.