1.made of 100%nylon+plastic core 2.eco-friendly 3.length:60mm, diameter 13 60mm 4.packaging:6pcs/pack 5.easy to use,light,convenient,can curl the hair anytime and anywhere.needn't hair spray,you just curl your hair when it have a little wet,no need any hair clips,the nylon hook can fasten the hair tightness. Then let it dry naturally,when you remove the hair roller out of the hair, it‘ll create a fastion hair style. It can reuse many times. 6. We also provide the aluminum core hair roller and three-layer hair roller,sponge hair roller and so on. welcome to contact us for more detail.