Update: After I wrote this review, I was contacted by Mumbi. It has no hesitation in sending me a new shell. Two days later, she was already there and I must say that the quality of the first shell differs significantly. The material feels high quality and the processing is again better. As the sheath is behaving regarding the discoloration yet to be seen. But for improved quality and this great service I now give 5 stars! Thumbs up :)