These are excellent tyres with a Kevlar puncture-resistant lining, which keeps you riding rather than fixing blow-outs. 

They are in very good condition, with plenty of wear left in treads, as shown by the wear indentations that Continental put on the tyres - there must be around 1.5-2mm of tread left. 

These tyres are around 4 years old - I took them off my all-terrain bicycle two years ago or so in favour of larger tyres with more tread, and haven't felt the need to go back.