The jersey feels super light when you first unpack it, and feeling much lighter than other jerseys for DH laps once you put it on this jersey certainly delivers in spades.
From being nice and cool and breathable on the way up, without feeling like its 'too cool' on the climbs, through to smashing down the hills whilst knowing that this jersey will be great for those enduro days where you are normally swimming in sweat by the time you get to the peak and then waiting around with the pack whilst you sit in a soaked shirt, will be avoided with this.
SIzed up in a medium left enough room for padding underneath and more like a slightly oversized shirt, good for air flow. True to size.