?Best Ratio of Length to Weight & The Most Popular Color & Professional Lifetime Service Team?12”: 70g, 14”: 75g, 16’’-18’’: 95g, 20’’: 110g. 1 pack is for adding length, 2 packs for adding volume. We have a professional design team to follow the most popular color trends. prime shipping, stock in USA, the fastest 24-48 hours can receive. We have a professional pre-sales and after-sales service team, You can enjoy unconditional return within 30 days. ?Double Fixed with Thicker Elastic Wire & 4 Clips--More Stable & No Pressure?Upgraded wire which is 9.25inch is thicker and more elastic, not easy to break and not cause any pressure on the scalp. Detachable 4 clips are more stable. If you don't need clips, just take out them. We offer extra 2 clips and 3 elastic Transparent lines for replacement: replace fish line is 10inch, 8inch and 7.3inch. It’s not suitable for people with very fine hair on the top or baldness as the wire may be seen. ?Upgraded 7 Layered Hairpiece & 90 Degree Lace Corner Design -- No Shedding, Soft? Our wire hair extensions has 7 layers hair weft, not easy to knot and fall off. More layered hair add the hair volume. Lighter and thinner lace hair net is more breathable and comfortable. The lace net is 90-degree curved design to prevent your ears from being rubbed by the weft. ?Only 5 Minutes to Put or Take out? Wire hair extensions is the easiest and quickest tool for adding volume and length. Anyone can do it. You can refer to our page description for wearing. Adjust size by tightening or loosening the standby wire. Hair doesn't move when you shake your head, which means you're wearing it correctly. ?More Comfortable & Natural & Lighter, Human Hair--Can Be Styled?Unlike traditional hair extensions, this new wire hair extensions is no tape no glue, with transparent wire, can blend perfectly with your hair color. And weft’s width is made according to measure head circumference which is 10.9inch. 100% human hair, you can style the hair according to your preference for many different occasions.