Herringbone triaxial weave (1,2 twill variation) - rear view
To recap, here is the Chequerboard triaxial fabric:
Chequerboard triaxial weave
The front and back of this fabric look quite different - unless the back layer
is also treated with its own layer of yellow fibres, which is quite
possible.
Without that treatment, the back of the fabric looks like this:
Chequerboard triaxial weave - rear view
If you want to add a second layer of fibres in one direction to a dense fabric,
using this fabric with yellow fibres on both sides may be a good way of doing
that.
To recap, here is a chequerboard triaxial fabric variation:
Chequerboard triaxial weave variation
From the back, this looks like this:
Chequerboard triaxial weave variation - rear view
This is the back of that chequerboard triaxial weave variation.
To recap, here is a 
