For the carnival in 2011 had the forth - and it is really worth it! Whether for fun or entertaining even for prolonged wearing the mask suitable (air supply is fine - unless you want to order as I train TaeBo ...;) ...).
The view through the lenses is sufficient - only eyeglass wearers will find it difficult (I had to use contact lenses again).
For me, a strong buy recommendation - because the helmet is now at Junior in the room as an ornament ...;)