The special lining in this cap is for medical use, when the scalp is extra sensitive. There are adjustable Velcro tabs in the back to adjust the size within a ½". This wig is made of 100% Remy Human Hair. Remy hair is the finest quality human hair available. This product provides long-term tangle-free wear. You may also color or perm the hair without damaging the hair shaft. With this monofilament cap, it allows the natural scalp color to show through for a more undetectable look. The construction method includes sides and back made of fine elastic mesh, resulting in a head hugging fit. All of these Mono styles come with tape tabs.