The construction: 
This unit is carefully crafted with a 5x5 inch (13x13 cm) lace front and silicone on the sides near the ears, which is perfect for those with alopecia or anyone who wants to wear a wig without any type of glue. The lace on the 5x5 lace piece at the forehead allows for a natural-looking hairline. We have included a picture to showcase the precise construction and quality.
 
Alopecia Lace front wig 5x5 inches / 13x13 cm = Measurements of lace piece