Wholesale Hair Extensions Length Grading — 2026 Measurement and Drawn-Type Guide

Hair extension length grading in wholesale hair extension buying is where buyer expectations and factory conventions most often diverge. Indian factories measure length in inches with strands pulled straight (not in curl or wave form). Industry standard is even-number inches: 16, 18, 20, 22, 24, 26, 28, 30. Weight per bundle is standardized at 100 grams regardless of length. Single-drawn hair has mixed-length strands (40 to 60 percent at stated length); double-drawn hair has been length-matched with 80 to 95 percent of strands at stated length. Double-drawn hair commands a 20 to 40 percent wholesale premium over single-drawn and is the standard for salon-installation applications. This guide explains the grading conventions every wholesale buyer should understand before negotiating SKU specifications.

Hair Extensions By Nature labels length, weight, and drawn type transparently on every SKU. This guide reflects how our Faridabad factory actually measures finished product.

Stocking multiple lengths? Request our Length × Drawn-Type Matrix with 2026 per-kg pricing across 16-30 inch at single, double, and premium-double drawn grades.

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How Length Is Measured

Standard Indian factory measurement convention:

• Pulled straight: Hair is laid flat and pulled taut. Length is measured from the root end to the tip.
• Even-inch increments: 16, 18, 20, 22, 24, 26, 28, 30 inches are the commercial standard.
• Tolerance ±1 inch: A “22-inch” bundle may measure 21 to 23 inches. Tight-tolerance orders (±0.5 inch) attract a 10 to 15 percent premium.
• Curl conversion: Wavy and curly hair stretches longer when pulled straight. A “18-inch deep wave” measures about 16 inches in its natural curl state. Always clarify whether pricing and measurement are on pulled-straight or curl length.

Weight Per Bundle

The Indian industry standard is 100 grams per bundle, regardless of length. This means:

• 16-inch bundle at 100 g has more strands than a 30-inch bundle at 100 g.
• Per-strand hair mass is higher in shorter bundles.
• Price-per-kg comparisons implicitly normalize for this.

Some wholesalers offer 95 g or 110 g bundles. These deviations are buyer-specification driven and warrant explicit confirmation in the proforma invoice.

Single-Drawn vs Double-Drawn — The Biggest Price Driver

After length, drawn-type is the single biggest price driver in hair extensions.

Single-drawn is acceptable for wigs where the overall cap construction masks length variance. For weft, tape-in, clip-in, and I-tip applications where the extension is visible near the tip, double-drawn is the practical minimum.

Length × USD/kg — 2026 Pricing Curve

Length pricing is non-linear because longer donor hair is structurally rarer:

30-inch hair costs roughly 2.5x the 16-inch price because long donor hair is statistically rare in the temple auction supply.

Length Mix for a Wholesale SKU Portfolio

A balanced wholesale SKU portfolio for salon-market customers typically distributes length across:

• 18 inch: 20 percent (training-client and first-time extension buyers).
• 20 inch: 20 percent.
• 22 inch: 30 percent (the volume-peak length).
• 24 inch: 15 percent.
• 26 inch: 10 percent (premium clients).
• 28-30 inch: 5 percent (luxury specialty).

African-market SKU portfolios skew longer (peak at 24 to 26 inch). European salon-chain portfolios cluster tighter around 20 to 22 inch.

Why Source From Hair Extensions By Nature?

Hair Extensions By Nature labels every bundle with length (pulled-straight inches), weight (100 g standard with 1 g tolerance), drawn type (single, double, or premium-double), and Remy status. Our standard tolerance is ±1 inch; tight-tolerance orders are available on request with a 10 to 15 percent uplift. Weight-per-bundle is verified on digital scales at dispatch with photos sent to buyers.

Frequently Asked Questions

Why is 30-inch hair so much more expensive than 16-inch hair?

Temple-auction donor hair that is naturally 30+ inches is rare — most donors tonsure at 14 to 24 inches. Long-length supply is structurally constrained. Prices reflect scarcity.

Can I order custom lengths like 17 or 19 inch?

Yes, but at a premium of 10 to 20 percent and usually with a 2x MOQ. Most factories are set up for even-inch production; odd-inch runs require dedicated length-matching.

What’s the difference between 100 g bundle and 100 g weft?

A bundle is typically a pre-bonded or loose-hair product. A weft is continuous sewn-track hair. Both are usually sold in 100 g quantities. Wefts may be cut to custom length at the salon; bundles are fixed.

Is single-drawn hair acceptable for salon use?

For full-coverage wig applications where cap construction masks length variance, yes. For visible-tip applications like tape-ins, clip-ins, I-tips, and direct wefts, double-drawn is the practical minimum — single-drawn tips look thin near the end.

How do I specify drawn type on a PO?

Write it explicitly: “22-inch Remy double-drawn (minimum 85 percent strands at 22 inch).” Suppliers sometimes default to single-drawn if not specified because it is cheaper to produce.

Does length measurement change with wet vs dry hair?

Marginally. Wet hair in curly/wavy textures can stretch 1 to 2 inches beyond dry-pulled-straight measurement. Industry convention measures dry and pulled straight.

What is the longest hair length I can actually buy commercially?

30 inches is the commercial upper bound. 32 and 34 inch bundles exist but are specialty and require 3x to 5x lead time. Anything claimed above 34 inch is usually multi-donor length-extended and should be verified for authentic single-length claim.

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info@hairextensionsbynature.com or quote request form.

Hair Extensions By Nature — Manufacturer and Exporter of Premium Indian Human Hair Extensions. Factory: Booth No 71, Sector 16 Huda Market, Faridabad, Haryana, India — 121002. Serving salons, distributors, and brands in 40+ countries.