the.com/waterbrush
A paintbrush that hides its water in the handle, so the river travels with you.
means A refillable brush with a water reservoir in the barrel, squeezed to feed the bristles for watercolor or ink on the go.
from A modern art-supply coinage joining water with brush, born for plein-air painters tired of lugging cups and rinse jars into the wild.
Squeeze controlPressing the barrel adjusts how much water flows.
Calligraphy crossoverLoved by brush letterers for portable watercolor strokes.
Self-cleaningA few squeezes rinse the bristles between colors.