When starting out you get “Tiny Feather” drops which lighten equipment weight, but as you level up and hit higher tiers they stop dropping and there doesn’t seem to be higher tier equivalents. This may be an oversight. I could always farm with a lower character, but that seems a bit of a work-around.
Its the tiny part, like the chipped gems, i guess they arent implemented yet but there should be higher tiers variants of those affixes, like large feathers or pristine stones.
Thank you for the report!