i think they just have a coating on the inside cuz its a different feel.
i found this on website....DEBBIE MEYER™ Green Bags® ARE ALSO GREAT FOR: FRESH CUT FLOWERS & FRESH HERBS!
How do DEBBIE MEYER™ Green Bags® work?
The DEBBIE MEYER™ Green Bags® absorb the ethelyne gas that is released by the food, which prevents the gas from staying in the fruit, and thus helping your food stay fresher longer.
What is the natural mineral that makes DEBBIE MEYER™ Green Bags® work?
Oya™ mineral form of Zeolite. This mineral is all natural and 100% non toxic
What is the difference in the different color DEBBIE MEYER™ Green Bags®?
The different colors have a different effect on different foods. The colors are as follows:
Green – Fruit/Vegetables
Yellow – Breads and grains
Red – meats
Blue – Cheese
Are the DEBBIE MEYER™ Green Bags® reusable?
Yes, up to 10 times each
Can I put cut up produce in the DEBBIE MEYER™ Green Bags®?
Yes, but please note that the juices will be absorbed by the DEBBIE MEYER™ Green Bags®, and that the scent of the fruit will be absorbed as well.