What is a 3 D mask?
The 2D style is a clam shaped mask that is folded in half. ( Horizontal) While the 3D style is a mask that has two flaps that fold out to cover the nose and chin.
How much fabric do I need to make a fitted face mask?
One adult mask requires two (2) 9”x6” pieces tight-weave cotton and two 7” pieces of 1/4 inch elastic. Therefore, one yard of 44” wide fabric yields 12-15 masks. You need 7.5 yards of elastic for 25 masks (14 inches per mask). You can make two sizes: Adult or Child.