Hi PermanentWaves,
We get more and more requests for full caps. It has a couple of advantages over a topper. You don't have to be concerned about blending the color and blending the density with your own hair so that makes things easier. On the other hand, since it comes down onto your neck you need to make sure that you have a solid attachment in the next area so that the movement of your neck doesn't break the bond. Many people like to have 3/4" poly on the back and sides so that they have a solid surface to attach to and get the best bond. There's lots of full cap wearers out there--hope to hear their thoughts on wearing a full cap.
Regards,
John