Headbands

The items appear to be bundles of morim fabric, which is a traditional, versatile fabric made from 100% cotton. 

Key characteristics of morim fabric include:

Composition: 100% cotton. 

Texture: It has a soft, smooth, and uniform texture with a visible weave or trama. 

Applications: It is widely used for various purposes, including making clothing, inner linings, waistbands, modeling proofs (moulage), and general handicrafts. 

Durability: It is known for its durability.