Do these shirts have a tailored collar or are they the knitted floppy type.

Not an expert but the collars are definitely not tailored. They are very comfortable when worn and I do not have any problem with them.

Anyone else had the seams start to unravel after one wash?

No. Washed several times, no colour fade, no fabric deterioration and definitely no problem with seams. Sounds like a fault that would warrant replacement. Good luck!

is there a size chart

I looked at other purchasers comments, bought large to start with for my normally 42 inch chest man but returned them for medium. No problem, sellers very helpful and the quality and texture of material is super! Silky, soft and crease resistant.My man says , best he’s worn. Maybe play more golf!!!

Hi, i usually take size large, am i better with size medium. thank you john.

I usually take Large in Polo shirts and found the large Woodworm size good. Not excessively large and at least they are long enough to tuck into trousers without constantly coming out. If your a smallish large then maybe Medium would be a better bet.