Before you start to measure, being sure to pull back any loose hair first. 1.Circumference: Measure all around the head. Position tape measure so its edge follows the hairline around the full circumference of the head and nape of the neck. 2. Front to Nape: Measure from hairline at center of forehead straight back over crown to center of hairline at nape of neck. 3. Ear to Ear across forehead: Measure from the left earalong the hairline to the rightear. 4. Ear to Ear over top: Measure from the left ear along the top of the head to the right ear. 5. Temple to Temple round back: From temple to temple across the back of head. 6. Nape of Neck: Measure the width of hairline across the nape of the neck. *Notice* 1. 5 by 5 closure wigs only have lace covering the forehead and no lace at sideburns, which causes the sideburns of the wig laying behind your own. This is a solution to avoid wefts showing not a size issue. 2. Lace length at the temples is over 1cm.