I have Draggin and Rokker rokkertechs. I went for a slide down the road a couple of years back , i was wearing the Rokkers , hardly a mark on them.
Another for Roadskins, agree it like wearing wranglers or levis, most comfortable bike jeans ever, prefer these to anything these daysRoadskin Taranis single layer AAA rated jeans, with stretch fibres as well. Fit like a pair Wranglers. It's rare I wear anything else on the bike these days.
Like helmets, find a decent pair from whichever brand fits you best.
www.hoodjeans.co.uk
Thats great advice as I bought a pair of cargo trousers for gentle green laning which although comfortable when I bounced at speed face first two things ref decent kit I soon learnt. The Acerbis Plastic Helmet was useless as it flex so easily my face hit the ground and then the knee armour moved which resulted in a broken knee cap and alot of pain for a long time. Needless to say I have the right gear now and a proper gold stickered helmetBrands aside , fit is everything. Make sure the armour sits on your knees, not below them ( like me a short arse) . The abrasion resistant fabrics used eg Kevlar Dynema don’t stretch as much as conventional textiles, so try then on, ideally sit on a bike or at least sit down and make sure everything is comfortable and the armours in the right places.
They’re AA rated .Are those Rokker cargo pants made from Polyethylene ? I notice it says UHMWPE ?? Presumably it’s fully tested an CE rated kit ?
If so, I’d be worried about the “plastic” material content melting under the heat of friction if sliding up the road.
The RN replaced all our uniforms/overalls containing Polyester fibres after the Falklands conflict for this reason, the kit had a great fit and was easy to launder but just fell apart or melted into flash burns due it’s plastic fibre content.

www.merlinbikegear.shop
I think you misunderstood, Rocker do a wide range of riding jeans, only one of which is waterproof. The rest are made from a very comfortable and cool mix of cotton and Kevlar type material - watch Motolegends videos for more detail than you need on this. They are more comfortable and cooler than regular jeans imho.30 - 35 degrees wearing jeans with a waterproof membrane.........you must naturally "run very cool"
I would be a sloppy mess.