A non-rigid head guard assembly that provides protection against head collisions. The head guard is circular with a narrower section at the forehead and a wider section at the rear to protect the back of the head. The head guard, at the sections in contact with the temple area of the head and the back of the head, is reinforced with an additional layer of foam. The exterior of the assembly is made of breathable and moisture wicking fabric. The interior protective element consists of either a single layer of viscoelastic polyurethane foam or a dual layer viscoelastic polyurethane foam separated by a thin layer of semi-dry lubricant, which is a low friction material, for enhanced wear and corrosion protection.