>>2816294They are a brand that produce "military grade" boots in the purest sense - cheap enough to fill a contract.
what
>>2816317 says is bang on the money.
YDS Kestrels were British Army issue c. 2016-19.They were NOT high liability i.e. not rated for combat or operations.
I had a pair for ~1yr that I had to exchange because the leather was all cracked BUT that was my own poor leather care and because they looked too shit for parade. The boot wasn't functionally compromised.
A mate of mine still wears them 7 years later as a barrack boot and occasionally for ex, and his still are holding up, so I wouldn't write off the brand as cheap shit. That said, of all the boots I've been issued they were definitely second worst after the current Iturri Patrol Boots.
They aren't chinkshit, they won't break after one use, but I'd personally say they aren't cheap enough to warrant not just buying the real deal.