I have some trolleys that have foam blocks with a fitted canvas cover on top. I replaced them recently at a cost of £2,071 per trolley.  One trolley received knife damage within a week (snap-off blade knife).

I am about to recover, but need to find a suitable cut-resistant material to go over the canvas covers.

Suggestions most welcome!! 

Trolley dimensions (approx.): 3m long x 0.5m wide x 150mm depth.

Thank you.

You could also try zylon its even tougher than Kevlar

added to all f1 chassis on the sides for driver protection