What is the difference between Full Lace Cap with Stretch and Full Lace Cap without Stretch?

These two caps are with lace all around the perimeter and available for you to wear your hair in updos and high ponytails. When the caps are glued down, the wig will have a natural hairline all around the perimeter. The unit can be parted anywhere as you wish. Full lace cap with stretch will be helpful for adjustment on your head size. Full lace cap with ear to ear stretch can be adjusted in Circumference. Full lace cap with stretch in crown can be adjusted in crown. Full lace cap without stretch does not have stretch and can be worn by women without hair or with scarce hair.（https://www.nerissahair.com）https://www.nerissahair.com