Over the years I've had a few different PVC jackets and pants. These were some my Dad had left over from his boating days, very heavy PVC, stiff to walk in, not very flexible and uncomfortable when riding - but with welded seams they very effective keeping water out. This was in the early 70's, no budget for proper bike gear (what was around in those days?), although I did have Mars black leather Brando jacket, got that from the Mars shop in Elizabeth Street, Melbourne. Remember those days?
The Brando jacket was more form than function, but did a reasonable job, that is until it got real cold and then over everything I'd don an old Australian Army Greatcoat.
I picked that up at an Army Disposal store in Geelong, still have it, can't bear to part with it.
The current DriRider gear is much lighter weight PVC, flexible, relatively comfortable and the welded seams seem to do the job.
Whilst on the trip down Memory Lane, I still have some my second ever pair of motorcycle gloves (the first were some worn out Stagg gloves gifted by the seller of my first bike) . These were made by Dent (big in their day) and were used for only a few years, they were put in a box in around 1978 when the bike was sold (to put a deposit on a block of land). The box moved house a couple times and was reopened on a few years back - what a pleasant surprise.