Here is some information from Graber on their cellular shades

Graber CrystalPleat® Cellular Shades use pleated folds of fabric to create air pockets that insulate windows from heat and cold, boosting the energy efficiency of a consumer’s home. These shades are also fully customizable, with three cell sizes and four opacity levels.
With R-values up to 5.45, our cellular shades will lower consumers’ energy use (and energy bills) year round. For more information on the energy efficiency of window treatments, please visit energy.gov.
Graber Cellular Shades have invisible cords, unlike our competitors’ shades.
Bottom up/top down cellular shades have an exclusive light blocking lip between rails to eliminate light leaks.
Graber Slide-Vue™ Cellular Shades are specially designed to accompany larger windows and patio doors.
Offering excellent sound absorption, cellular shades also reduce noise in rooms with hard flooring.
GET A FRESH TAKE ON COLOR AND STYLE
Graber CrystalPleat

Cellular shades are always a favorite choice thanks to their luxurious softness,
versatile light control options and energy efficient properties. Now we’ve refreshed the line with on-trend
colors and styles, offering you exciting new opportunities for creativity.

New COLLECTIONS
in the cellular
line include Zest, a tone-on-tone fabric with a
contemporary sensibility, and Cambridge, a sheer,
woven fabric of understated beauty.

The new color palette includes colors that are deep,
rich or bold, in keeping with today’s lifestyles. The
selection of neutrals and earth tones has also been
enhanced, offering you more ways than ever to achieve
subtle beauty. Also new to the line are additional
blackout colors—an increasingly popular choice—and
an expanded selection of coordinating colors for light
filtering and blackout fabrics

Perfect-Vue
shades join a pleated fabric on the top with a cellular fabric on the bottom
for maximum design versatility. The shades can be easily adjusted for privacy and light control.
Alter the ambiance of a room based on time of day, mood, or intended room use.

The wide choice of both pleated and cellular fabrics makes
it possible to create nearly endless designer looks. Cellular
fabrics appropriate for Perfect-Vue shades are available in four
opacities—sheer, light filtering, room darkening and blackout—
as well as 24 styles and 239 colors. One-inch pleated fabrics for
Perfect-Vue shades are available in a variety of sheers, linens
and textures. Choose from 15 styles and 67 colors