Dutch perfect No Flat puncture proof tyre
Dutch perfect puncture proof trail tread tyre
Made of rubber,Reinforced with kevlar in a dual layer
No flat tyre puncture protection, resists glass, splinters, gravel,
drawing pins and any other sharp objects
they offer maximum protection unlike most punture protection tyres on the market
thes tyres are punture protected tyres they come in nearly all bicycle wheel sizes
Check this video out to see how good they are
https://www.youtube.com/watch?v=VHUfmptwihk
and yes there darndale proof