Normally the length showed online is the original length of the hair, but not the length after shaping. And if you believe it is shorter than the actual length, please kindly try to measure it from the top to the tip after pulling it straight. Then you will see its actual length. For the headband wig, normally it is made at the same weight. So the longer the length, the thinner it looks. But there are many customers who have already tried it and installed well. This density is OK to make a nice style and we will try to increase the density of wigs over 20 inches in length. But the price may be higher than now. For our lace front wig and lace closure wig, the density is 150% or 180% And it is also the best density for that price. If you need higher density, you may consider 13X4 frontal lace wig. You can check the link below for 200% or 250% density 13X4 frontal lace wig: https://ishowbeauty.com/collections/13x4-lace-front-wig