This item is for 39*8 cm fabrics. 

DIY Plain Elastic Rib Knit Fabric Cuffs Knit Collar Trim Jersey Cotton Neck Soft

Size: length: 39 cm/15.4 in, width: 8 cm/3.1 in 

Material: cotton 

Color: as shown in the pictures 

SKU: 904-A401/JYY