Length: 15"-32" Texture: deep curly Weight: 100strands/50g,0.5g/s (Between 200-300 strands will be needed for a full head) Materials: Selected 100% finest Human hair, Highest Quality Keratin, Plastic coated aluminum rings and plastic loop. Micro Loop Ring Hair Extensions is the updated Stick hair, which is made of 100% human hair with self Micro ring System. You only need a professional hair extensions plier to apply these hair extensions which means hair extension tools will not be needed! This is because Micro Loop Hair Extensions have the Micro Loop and Micro ring attached already. This system does not require any heat, glue, keratin bonding or sewing. Most importantly this system does not yield damaging effects on the hair as heat, glue, keratin bonds, glues, braiding or sewing.No Glue, No Mess, No Fuss The latest innovation of hair extensions. Usage Method: It is easy to use without heat or glue. Micro Loop Ring Hair extensions is made by 100% finest human hair and it has micro ring already in place. All you need is the pliers. You can straighten, curl and cut it. Micro Loop Ring Hair extensions are made from 100% finest human hair that has micro rings already attached and in place to add straight to the natural hair using the already attached loop tool used to pull the natural hair through the micro ring, all you need is the pliers to close the micro ring. About Hair care: the comb must be the kind with round tips/ends and loose comb teeth, don't comb in a hard way to prevent the hair loss; don't keep too close to the hair extension roots when blow-drying it; don't scratch or rub the hair extension roots in a hard way