One of the most common questions we get: “How many bundles do I need?” The honest answer is: it depends — on the length you're installing, the texture, whether you're using a closure or frontal, and how full you want the finished look. This guide breaks down the exact bundle count for every common scenario so you can shop with confidence.
What is a hair bundle?
A hair bundle (also called a weft) is a track of hair sewn together at the top, measured by weight — typically 100 grams per bundle. When you buy bundles, you're buying the raw material to create a sew-in, weave, or custom wig. The number of bundles you need depends on how much coverage you're creating and at what length.
Key fact: Longer bundles weigh the same (100g) but have fewer total wefts per bundle because each strand is longer. This is why longer installs require more bundles — you need the same amount of coverage but each bundle covers less area.
Install types and what they need
Full sew-in (no leave-out)
All of your natural hair is braided down. The entire head is covered with bundles. This requires the most bundles — typically 3–4 for short to medium lengths, and 4–5 for longer lengths.
Partial sew-in (with leave-out)
Your natural hair at the top or front is left out and blended with the bundles. Requires fewer bundles — typically 2–3 — because you're only covering part of the head.
Sew-in with closure
All natural hair is braided down, and a closure (4x4 or 5x5) covers the crown/parting area. This eliminates the need for a leave-out and requires fewer bundles than a full sew-in because the closure handles the top section. Typically 2–3 bundles + 1 closure.
Sew-in with frontal
A frontal covers the entire hairline from ear to ear. This gives the most natural-looking hairline and eliminates leave-out. Requires fewer bundles than a full sew-in because the frontal handles the entire front section. Typically 2–3 bundles + 1 frontal.
Custom wig construction
Building a wig on a lace closure or frontal cap. Bundle count depends on cap size, desired density, and length. Similar counts to sew-in with closure/frontal.
Bundle count by length: full sew-in
This chart shows how many 100g bundles you need for a full sew-in with no closure or frontal at each length, for a full, natural-looking result on an average head size.
| Length | Bundles needed (full sew-in) | Notes |
|---|---|---|
| 8–12 inches | 2–3 bundles | Short lengths are efficient — each bundle covers more of the head |
| 14–16 inches | 3 bundles | Most common starter count; covers full head at shoulder length |
| 18–20 inches | 3–4 bundles | 3 works for most; go to 4 for a very full look or a larger head |
| 22–24 inches | 4 bundles | Standard count for this length; 3 may look thin at the ends |
| 26–28 inches | 4–5 bundles | Longer hair = fewer wefts per bundle; need more to maintain fullness |
| 30 inches and above | 5–6 bundles | Very long installs need significant bundle count to avoid sparseness |
Bundles with a closure
A closure covers the crown and parting space (typically 4x4 or 5x5 inches), so you need fewer bundles to complete the look. The closure handles the top of the head; the bundles handle everything else.
| Length | Bundles + closure |
|---|---|
| 8–12 inches | 2 bundles + 1 closure |
| 14–16 inches | 2–3 bundles + 1 closure |
| 18–20 inches | 3 bundles + 1 closure |
| 22–24 inches | 3–4 bundles + 1 closure |
| 26–28 inches | 4 bundles + 1 closure |
| 30 inches+ | 4–5 bundles + 1 closure |
Bundles with a frontal
A frontal covers ear to ear (typically 13x4 or 13x6 inches), giving you a complete, natural hairline with no leave-out. Because the frontal covers more area than a closure, you need even fewer bundles — the frontal handles the entire front section of the head.
| Length | Bundles + frontal |
|---|---|
| 8–12 inches | 1–2 bundles + 1 frontal |
| 14–16 inches | 2 bundles + 1 frontal |
| 18–20 inches | 2–3 bundles + 1 frontal |
| 22–24 inches | 3 bundles + 1 frontal |
| 26–28 inches | 3–4 bundles + 1 frontal |
| 30 inches+ | 4 bundles + 1 frontal |
→ Shop frontals | Shop closures
How texture affects bundle count
Texture matters because curly and wavy textures are naturally thicker and fuller — so each bundle covers more visual area. You typically need fewer bundles for curly textures than for straight textures at the same length.
| Texture | Bundle adjustment vs. straight |
|---|---|
| Straight / kinky straight | Baseline — use counts above |
| Body wave | Same as straight; the wave adds volume but coverage is similar |
| Deep wave / water wave | Can often reduce by 1 bundle — the wave creates natural volume |
| Curly (Burmese, kinky curly) | Reduce by 1 bundle at most lengths — curls are very voluminous per weft |
Quick reference: most common installs
| Install type | Length | What to buy |
|---|---|---|
| Full sew-in, no closure | 16 inches | 3 bundles |
| Full sew-in, no closure | 20 inches | 3–4 bundles |
| Full sew-in, no closure | 24 inches | 4 bundles |
| Sew-in with closure | 16 inches | 2 bundles + 1 closure |
| Sew-in with closure | 20 inches | 3 bundles + 1 closure |
| Sew-in with frontal | 16 inches | 2 bundles + 1 frontal |
| Sew-in with frontal | 20 inches | 2–3 bundles + 1 frontal |
| Sew-in with frontal | 24 inches | 3 bundles + 1 frontal |
| Custom wig (closure cap) | 18–20 inches | 3 bundles + 1 closure |
| Curly sew-in with closure | 20 inches | 2–3 bundles + 1 closure |
All hair bundles | Body wave bundles | Straight bundles | Closures | Frontals
Frequently asked questions
Can I mix bundle lengths?
Yes — and many stylists recommend it for a more natural, layered look. A common combination is 18/20/22 inches for a long install, or 14/16 inches for a layered medium look. The longest bundle drives the overall length; the shorter bundles add fullness at the top and mid-shaft.
What if I have a large head?
If your head circumference is above average (above 22 inches), add one extra bundle to any install. More scalp area to cover means more wefts needed to achieve the same fullness.
What's the difference between a closure and a frontal?
A closure covers a small section at the crown (4x4 or 5x5 inches) and is designed to close off a sew-in. A frontal covers the entire hairline from ear to ear (13x4 or 13x6 inches) and gives you a natural hairline all the way across. Frontals require more installation skill and maintenance; closures are more beginner-friendly.
Do I need to buy the same length for my closure/frontal as my bundles?
You can, but it's common to buy the closure or frontal in a slightly shorter length than the longest bundle — for example, 16-inch closure with 18/20/22-inch bundles. The closure doesn't need to match the longest length because it covers the crown, where hair naturally appears shorter. Just make sure the closure length blends with the rest of the install.
What if I want a really full look?
Add one extra bundle above the counts above. For maximum fullness on a 20-inch install, go with 4 bundles instead of 3. Going with a higher-density closure or frontal also helps — look for 130% or 150% density closures rather than the lightest options.
Can I use leftover bundles later?
Yes — store unused bundles in a cool, dry place in their original packaging or a zip-lock bag. Human hair bundles keep well if stored clean and dry. Buying one extra bundle as insurance is always smart if you're between counts.
→ More guides: Wig Beginner's Guide | Wig Length Chart | Density Guide | Texture Guide | All Buying Guides