Unfortunately... all the ones I have used that are made commercially (washable) are not really washable.
You have to make a real washable hose.
I start with a good set of old hose tips and use this stuff as my hose. Just glue gun the stuff together.
This stuff is much more flexible than the clear vinyl tubing at Home Depot.
Then you can order a hose cover or sew one up yourself to cover the ugly black plastic hose.