In reply to nik king: as said no waterproof is breathable enough for high exertion, skin is the most waterproof breathable product I know
top breathability is from event, rab or Montane or Gore Active shell,berghaus, Mountain equipment but you can get chepaer and lighter that does the job, i.e. Minimus Jkt, Mica Jkt
or if you need a regulation beater then litespeed H20 jkt, but its not breathable really
detachable hood, no
light and robust? mutually exclusive traits in waterproof jkts