I don't know how they rate anti-puncture-wise, but there's a folding version of the Continentals Ultra Gatorskin, which weighs 220g (a tad over the GP 4000's 205g).
Seen them at £24-27, but I found them for £17 here:
http://www.slanecycles.co.uk/productdetail.aspx?id=433&subid=285&catid=67
@Shannonball started
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I don't know how they rate anti-puncture-wise, but there's a folding version of the Continentals Ultra Gatorskin, which weighs 220g (a tad over the GP 4000's 205g).
Seen them at £24-27, but I found them for £17 here:
http://www.slanecycles.co.uk/productdetail.aspx?id=433&subid=285&catid=67