How to make a duvet cover and pillowcase zipper

Duvet Available as seen on all bed-sizes NGN🏷️: 6 by 7-52,000 (Complete set) 6 by 6-50,000 (Complete set) 6 by 4-45,000 (Complete set) 7 by 7-57,000 (Complete set) Complete set Comprises of (Duvet,Bedspread & pillowcases, 6,000 for a double fiber) Duvet set with Duvet Cover NGN: 4 by 6-60,000 4.5 by 6-63,000 6 by 6-68,000 6 by 7-70,000 7 by 7-77,000 Duvet cover can come with a zip or press on button ur preferred choice• SINGLE SET (sheet & pillowcase) NGN: 4 by 6-14,000 (sheet & 2 pillowcase) 4