Spring Air’s Green Index is the scale by which their Nature’s Rest eco-friendly mattresses are determined.

When shopping for a Spring Air eco-mattress, you must always check for this.

The Green Index go from a rating of G01 to G100 determining the different kinds of ingredients and composition to the mattress.

G01 to G49 are entry level types which is made of “soy-based polyurethane core, natural latex upholstery, cashmere blended fibers, cashmere knit covers and a furniture-grade renewable wood foundation.”

G50 to G99, meanwhile has “upgraded latex core, organic knit cover and natural wood fibers.”

G100 of course is its top of the line, fully organic 100% natural eco mattress.

Via Spring Air