GrumpyGregry
Here for rides.
There is no gap in the market.To get back to the OP's question - there is no replacement for the Zyme's at the moment on the market. I know because mine recently finally fell apart too! Luckily I found someone selling an unused pair on Ebay in my size, so that will keep me going for a couple of years.
I've searched everywhere, UK and overseas, for equivalents. There are several made from the crinkly material you describe but nothing with natural (or natural-feeling) fabric. I've tried Swrve 3/4's but didn't like them - strange fit and really expensive - so they went back.
I've spoken to someone at Endura and they say the Urban Stretch short is the nearest replacement for Zyme's, although no 3/4. I asked their product development dept to have a look into doing a 3/4 version. There really is a gap in the market for someone wanting to make these. I'm sure they'd sell well, in spite of the scepticism displayed here!
There is only the wallets of off-bike 3/4 short wearers to be prised open....