The only top to be worn over a 150 N lifejacket
The Top 3D does not restrict the expansion of the life jacket when inflation occurs.
Worn like a standard Guy Cotten smock or Jacket, it also protects the lifejacket from damage when at work because the an inflatable lifejacket does not if it is damaged or punctured.

Please note these tops do not have the High Viz hood as shown in the picture.