[Translation of the original French comment]
Last comment pretty unfriendly. 20 yrs on Fex and very happy. Never needed aftersales, wings are simple. Finsterwalder products aren't for assisted clients, they're first light and foldable wings for independent and free clients. The air they breathe would probably burn competitors' lungs. Nevertheless, Speedfex's indeed an alien in the Finsterwalder range.