What makes them different is that there is a fantastic pattern printed on the cloth before it is sewn. The colors soak into the white fabric, so the color shows through on both sides of the parachute. You can't tell which is the inside versus the outside, since the color is so vibrant on both sides of the fabric.
Another thing that is different on these parachutes is that the suspension lines are thinner compared to other brands of nylon parachutes. The advantage of this is that they pack up into a smaller bundle, so you can use them in skinnier rockets and still be assured they are loose enough to eject without plugging up the tube. Other manufacturers use thicker string because it is easier to sew onto the canopy. But we've solved that problem, so thinner lines are used, and they are just as strong as the bulky ones.