Don't waste your time with cheap Perlon copies which means most things that are not Eulit. They will be nasty scratchy affairs that lack substance leaving the watch head head to flop about on your wrist.
Available as Krystal and Panama variants - I prefer the latter.
More information on this thread
https://forum.tz-uk.com/showthread.p...-Perlon-straps!
I have found that they may feel a little stiff at first but after some wear they kind of mould themselves to your wrist shape and become supremely comfortable.
They are incredibly durable too, I have a grey 18mm one that I have worn for years. I occasionally stick it in the washing machine and it shows no signs of wear.
I have bought a few from this German eBay seller
https://www.ebay.co.uk/itm/Eulit-Per...53.m2749.l2649