Regular duffel/luggage bags work for me. Just find one with the dimensions/features you need.
https://www.amazon.com/INFANZIA-Zipper-Equipment-Resistant-Oversize/dp/B07F2ZYKPS/ref=sr_1_1?dchild=1&keywords=Extra+Large+Wheeled+Luggage+Travel+Holdall+Bag+XXL+34+Inch+2.5+kg&qid=1624205106&sr=8-1