Men's Cotton Flannel Nightcap - Green Tartan Blackwatch (LV6)   €19.90

I find the elastic band a tad lose for the size of my skull. Of course I could have purchased a woman’s version but somehow there is a reluctance (male pride?) in doing so for us men. Maybe instead of having men’s and ladies’ versions, you could have sizes: S/M/L, and provide the circumference for each one