Setacolour Fluorescent 45ml.

See the Colour Chart here

For denser effects choose the bright luminous colours of the Setacolor Opaque range.
Setacolor Opaque Shimmer colours add a subtle lustre and sparkle.
For light fabrics choose the lighter Setacolor Transparent colours, being light, they leave the finest and most delicate fabrics soft and light, all that's needed to fix the the colour is a little ironing.
Setacolor Transparent colours are available in 30 colours in 45 ml including 5 fluorescent colours.