PACKAGE INCLUDED -- 2 rolls elastic band and 20pcs buttons including 1 roll white elastic band and 1 roll black elastic band, 10pcs white buttons and 10pcs black buttons. Size: the flat elastic rubber band is 0.78" wide and the resin buttons are 0.51" in diameter with 1mm hole. FLAT DESIGN -- Elastic rubber band in black and white color, simple color is easy to match with your clothes. Flat design, is comfortable and soft to wear. And it can be shortened into the length you want, convenient to apply . GOOD QUALITY -- The braided elastic band with good quality is very stretchy, and it does not deform its shape easily after stretching or applying it for a long time. It is durable and breathable, ensuring breathable while maintaining durability, making it more comfortable to apply. WIDE APPLICATION -- Suitable for waistbands, sleeves, necklines, crafts work etc. It offers a stiff and strong stretch, which can be used on heavier fabrics. For example, strong stretch knit elastic is perfect for cuff band and jacket waistband. WITH BUTTONHOLE -- This flat elastic cord comes with buttonhole, is convenient and helpful for you to adjust the length as you like, especially for pregnant woman clothes.