The Titlis helmet is a rather interesting item.
The manufacturer, "Titlis Fiber Composites Ltd." active since 1970 and located in Ennetbürgen, Canton Nidwalden, ceased activities
Looking for a “light helmet” bound to replace the “problematic” Gueneau 316, Two Titlis (#2 and #3) were flight tested and evaluated by the end of the 80s with other two competitors, the Gueneau ZEUS and the Gentex H/ATS.
To our knowledge, at least three Titlis were built, fitted with a Dräger P/N 787665-667 oxygen mask.
The helmet was evaluated positively in terms of comfort and balance, however a number of snags were present:
the major one its weight - the highest of the three competitors; the awkward command mechanism of the double visors and, due to the oxygen mask hose routing, a certain determent to turn the pilot’s head to the left.
Proto #1 (the one pictured here) was probably a Proof of Concept and never flew.