Full Lace Vs. Lace Front Vs. Regular Wigs: The Differences?。Notice the 1st 4 caps you can see the lace/nylon stretch each strand is sewn one by one then the next 4 is Weft the hair is sewn on a long string by machine New Fulllace caps are made with a stretchy lace/nylon wigs improve every year in some way The old fulllace cap is made only of lace the issue with that is the lace would rip easily or not fit correctly I sell the new fulllace caps that are a stretchy type nylon added too the cap so it stretches too conform 2your head please look at photos