Firmer foam, No terrible smell, Not easily separated, No glue causing hair damage You can twists your hair anytime;anywhere;by yourself. it works best on thick, coarse,tightly coiled curls and very textured hair;The big holes gives you bigger curls and the smaller holes gives you more tight curls. 【PACKAGE】: 1 * Big Hair Twist Sponge 【FEATURES】: The different sides and holes are for the length of the hair and how lose or tight you want your hair to be 【MATERIAL】: Using environmentally friendly materials and firmer foam, No terrible smell, No separated, No glue causing hair damage 【DIMENSION】: 7.61*4.45*2.56 inch, Hole diameter: 0.32/0.59 inch Article refund or change if unsatisfactory guaranteed