I find my Klim Induction works well on it's own from about 16C/65F. By adding the Zephyr windshell plus the Maverick Down jacket under it I can start my day considerably cooler than that and peel off layers as the day progresses.
I also have a Knox Urbane Pro that is possibly the ultimate hot weather layer that offers protection. It also keep the armour exactly where I want it as it is a base layer. Then I can play around with the outer jacket depending on the weather. Even the Latitude jacket would pack considerably more compactly if the armour was removed.
I also have a Knox Urbane Pro that is possibly the ultimate hot weather layer that offers protection. It also keep the armour exactly where I want it as it is a base layer. Then I can play around with the outer jacket depending on the weather. Even the Latitude jacket would pack considerably more compactly if the armour was removed.