MADE FROM ECO-FRIENDLY ACETATE.  DROP-PROOF - MADE OF DURABLE ACETATE MATERIAL WHICH IS BOTH STRONG AND FLEXIBLE ECO-FRIENDLY - PLANT-BASED ACETATE CELLULOSE IS MADE FROM WOOD PULP AND COTTON AVOIDING PLASTIC EXTRA STRONG GRIP - CUSTOM DESIGN AND HIGH-QUALITY SPRING GRIPS HAIR WELL AND IS GREAT FOR ALL HAIR TYPES  COMFORTABLE - LIGHT DESIGN AND SMOOTH, ROUNDED TEETH HELP GRIP HAIR WHILE AVOIDING SNAGGING, SCALP PAIN AND HEADACHES