It has a bit of a strong rubber smell to start with but it’s gone soon enough. The case is sturdy and keeps my headphones and accessories together while protecting them during travel and storage. It comes with a little pouch that velcro attaches to the inside wall which I find useful for holding charging cables and adapters.
This is very good material but too big for the Sennheiser headphones. The pouch provided inside is stuck to a velcro with a large opening so things inside like audio jack, cables keep falling out. I fixed it using paper clips to close the mouth of the pouch.