PANArt now offers a backpack for the Integral Hang similar to the former backpacks for the second generation Hanghang. The new backpack is waterproof and used together with the hard case. It will be ready for delivery in a few weeks.
Thanks to pulpfiction1 from the Hang-Music Forum 
for the permission to use his pictures.
PANArt has sent emails to the owners of an Integral Hang to announce the new backpack. Here are some further pictures. The price of the backpack is 50 Euro/80 USD, shipping costs: 15 Euro/22 USD
Hello there
Can you still purchase the hard case and backpack? I have a 1st and 2nd Gen without hardcases?
Also is the hardcase strong enough to be put into a plane hold?
Thanks
Colin
If you bought your Hanghang from PANArt you can send an e-mail to PANArt (you will find the address for example in the Hang Guide). If you bought your Hanghang from eBay listings or something like this, I think they will not sell you any equipment.
I wouldn’t use the case for checking in baggage on a plane. Only for hand luggage.