The sanremo front makes it easy to ventilate easy to respond when nature calls and maintains the aero performance of a 2 piece suit the full pockets on the back lay flat for the swim while providing plenty of space for carrying nutrition on the bike or run windproofness 1 out of 5 waterproofness 1 out of 5 insulation 1 out of 5 breathability 4 out of 5 lightweight 4 out of 5