I've had my current Kite bag for over 20 years - it was manufactured by "protection racket" from a very heavy duty black waterproof canvas.
5 inch Diameter and 5 ft 6 inches long and holds about 10 kites with an added 4.5 plastic tube inside for long haul flights and about 13 kites without the tube
It's travelled with everywhere but it's not got much longer left in it.
I've contacted the company and they no longer make them - they've concentrated on their core business (making cases for musical instruments and ancillaries)
Any recommendations for a replacement??
Edited to add pics