Headphone Case 15cm x 8cm x 5cm for Sennheiser PX100 PX100 PX200 PX200 II II Brand New (Electronics)
seems to be pretty robust. By cons, my Sennheiser PX100 - II just came in, it gives the impression of force, not protect it well. The pocket in the lid is very small. OK if your MP3 is ultrathin but otherwise it forces on the helmet. Product no more