People have been gushing about the ism attack since its introduction in 2013 as we know however one size does not fit all in the case of the attack everyone loves the shape but some folks wanted just a touch more paddingthe pn 11 answers the call for a softer option in our performance narrow line it has 40 series padding just like the super plush prologue saddle this makes it a great choice for riding in thin triathlon style shorts or for anyone who simply wants a softer ridethe fro