High Collar made of  100% Egyptian cotton, for wear under abaya when you don't need to wear a full dress under abaya.
Some of the abayas come with a V-neck opening, or has a big neck opening which hijab may not cover, or if hijab was raised by anything, .. ....wind for example, or when bedding down to pick something from floor.
This cotton collar is made to guarantee coverage of neck and upper chest in all circumstances.