Density & coverage
Consider natural hair density, anchor hair and the coverage available over the attachment.
Start With 100gHair extensions · Compare. Evaluate. Decide.
Choose the construction around your installation method, coverage needs and working range.

01 / Choose around the client
Density, coverage, the desired result and the maintenance routine shape the product brief.
Consider natural hair density, anchor hair and the coverage available over the attachment.
Balance length and fullness goals with updos, exercise, washing and drying.
Choose around the client’s willingness to attend maintenance and follow the professional care plan.
02 / Construction & specifications
All six weft ranges: 14–30 inches. Stock ratio: 30%; 30 / 40 / 50 / 80 / 100% available for your fullness brief.
| Feature | Super Genius Weft ↗ | Genius Weft ↗ | Hand-Tied Weft ↗ | Machine Weft ↗ |
|---|---|---|---|---|
| Pack | 100g / piece | 50g | 100g | 100g |
| Width / configuration | 80cm | 80cm | 30cm × 6 pieces | 135cm |
| Profile | 1–2mm | Less than approximately 0.5mm | Approximately 0.5mm | Approximately 0.5cm (5mm)Double-layer construction |
| Cutting | Can be cut | Can be cut | Cannot be cut | Can be cut |
Profile figures describe the stated construction. Compare the actual track with your planned stacking and coverage. Flat Weft: approximately 140cm / 0.6mm. Hola Weft cannot be freely cut.
Understand The Ratio System03 / Attachment method
Compare track layout or tape-piece placement, attachment coverage and maintenance.
Compare FormatsK-Tip, U-Tip and V-Tip use Italian keratin bonds for professional heat-fusion application.
Explore K-TipI-Tip and Northvale Nano use mechanical attachment. Their keratin tips do not need melting during installation.
Explore I-Tip Explore NanoUse each product’s installed considerations to define placement, weight and maintenance, then send us your specification.
01 / Product system
Six constructions. A specific reference for each.

Two Genius Wefts pre-sewn into one 100g piece. 80cm wide, with the joining work already done.
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A Northvale salon favorite
50g across 80cm. A cuttable adhesive-strip track with no return hair.
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A hand-tied construction for a considered professional weft program.
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An additional weft construction within the Northvale manufacturing range.
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A machine-constructed weft backed by real production-floor evidence.
Explore This Construction02 / Product system
Tape-In and Invisible Tape for professional application.


A 4 × 0.8cm tape attachment, supplied as 20 pieces / 50g per pack.
Explore This Construction03 / Product system
Five formats for strand-by-strand installation.

A Northvale salon favorite
An Italian keratin flat bond for professional heat-fusion strand application.
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An Italian keratin I-shaped tip for mechanical ring or bead attachment.
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An Italian keratin U-shaped bond for professional heat-fusion application.
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An Italian keratin V-shaped bond for professional heat-fusion application.
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Northvale’s Italian keratin tip with a fine metal wire loop for mechanical nano-ring attachment.
Explore This Construction04 / Product system
A dedicated range, developed around the base and coverage brief.
Seven shades, shown front and back. Range: 14–20 inches; free parting available. Base sizes: 3 × 5, 5 × 5, 5.5 × 6.5 and 6 × 5.5 inches. Confirm the base and size combination for your coverage brief.
Explore the shade front and back. Choose the base and size around the coverage brief.
View Topper DetailsExplore the shade front and back. Choose the base and size around the coverage brief.
View Topper DetailsExplore the shade front and back. Choose the base and size around the coverage brief.
View Topper DetailsExplore the shade front and back. Choose the base and size around the coverage brief.
View Topper DetailsExplore the shade front and back. Choose the base and size around the coverage brief.
View Topper DetailsExplore the shade front and back. Choose the base and size around the coverage brief.
View Topper DetailsExplore the shade front and back. Choose the base and size around the coverage brief.
View Topper DetailsInside the topper
Compare the internal construction of Single-Ring Mono, Di Zhen, Swiss Lace, Double-Ring Mono and 35 Mono. All five photographs show color #6.

单圈 Mono
Internal base · #6 reference · Open photo to enlarge
递针
Internal base · #6 reference · Open photo to enlarge
瑞士网
Internal base · #6 reference · Open photo to enlarge
双圈 Mono
Internal base · #6 reference · Open photo to enlarge
35 Mono
Internal base · #6 reference · Open photo to enlargeConfirm the base type, dimensions, coverage and shade combination with your product brief.
05 / Product system
Clip-In and PU Clip-In formats.

A temporary extension format for a professional retail or salon program.
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A PU Clip-In construction to assess against your temporary extension brief.
Explore This Construction06 / Product system
Chinese Virgin Hair for your production brief.

Chinese Virgin Hair supplied in bulk format for an agreed production specification.
Explore This ConstructionStart with the material
Selected as single-donor Chinese braid hair before processing.
Your next order
Start with 100g, then build a flexible 500g order around the products, shades and lengths your salon uses.