While still out riding South America a friend of mine came to join me for a short time a couple of years ago sending out his moto by plane.

He left his normal biking gear at home and like you choose to select from Screwfix I have no idea which pair of workers trousers he wore but it did have pockets in front of the knees where similar motorbike pads where in place.

Anyway he came off the moto at around 40 mph on a fast road where he hit the ground on his knee and slid along and had to roll away from the oil tanker coming up behind him.

The bike drop had snapped off the Givi top box plus various other damages.

On checking him the left knee that hit the ground had the fabric ripped and the pad still in place had taken a battering but he suffered no damage to his knee.

The fabric all over was very strong and showed signs of wear but held up well.

He was wearing a standard denim jacket with a full back protector underneath.
So his back was good but where his left elbow hit the ground the denim was torn open and he had a fractured elbow.

So each to their own but whatever you choose to wear select on strength of fabric and having pads in the right place.
If the pads can be exchanged for a better quality all the better.

But ride to be safe not dress to crash.

Good luck on what suits and enjoy the ride.