Sadly - after over 10 years trouble free purchase and all-day wear of serial Hi Tech blast black trainers, and having warmly recommended them through Amazon for their comfort, smartness and durability as an all-purpose all-day trainer/shoe, I have to withdraw all I have said about them in the past. This pair has been a disaster, impossible to wear for more than half an hour. They are simply two small, despite being labelled my usual size (10) and I don't fee inclined to experiment with a larger size via mail order and risk wasting yet more money. (I even took them to my local cobbler to have them stretched, to no avail.)
So thank you, Hi Tech, for the walking pleasure you have given me over the past ten and more years, but sadly I shall now have to look (and walk) elsewhere.