helmet + clothes - you need these
Clothes are the first place to start in your quest to save weight. Don’t get a lighter item, just don’t take it.
Two pairs of long pants? No, take one. Extra shoes? Gone. Socks? Who needs them? Etc.
But some things can’t be sacrificed.
The clothes that make you comfortable for those many long hours a day on your bike: bike short and fingerless gloves.
And the clothes that protect you from the weather: the sun and rain.
Travelling wearing the same uniform each day is really not so bad. OK, the photos will have a certain sameness about them.
But at least the camera doesn’t capture smell.