I-tip hair extensions are hair bundles with the hair tips bonded with keratin in I shape. We use premium quality keratin which is gentle on your hair and also provides a good hard bond. It is safe for your health. For our I-tip hair extensions product, the standard size is 2.0mm x 1.5cm. 1 gram each and a bundle of 100g consists of 100 pieces. Of course, we're able to customize according to your specific requirements. Made from 100% high quality human hair, thick ends, no shedding, no tangles, can use irons and curling irons. With modern technology and years of knowledge, we can confidently produce any hair color you want.