Split plastic is probably the better option but will not take sunlight and chemical exposure long term. Braided mesh may hold moisture/chemicals more ?

If your having flexing issues maybe make some spiral loom out of poly water line and cover the split plastic with that for more flexing pinching protection.

 Shortone made one.

https://talk.newagtalk.com/forums/thread-view.asp?tid=749602&mid=642...

My previous threads on material you can buy like the Safeplast product.

https://talk.newagtalk.com/forums/thread-view.asp?tid=756936

https://talk.newagtalk.com/forums/thread-view.asp?tid=766987

Or cutting your own out of poly pipe.

https://talk.newagtalk.com/forums/thread-view.asp?tid=760519

https://talk.newagtalk.com/forums/thread-view.asp?tid=761174

Nylon hose abrasion protection.

https://talk.newagtalk.com/forums/thread-view.asp?tid=749602

Pics and video in this album

https://imageevent.com/vprb/polypipespiralwrapcutter