How Many Bundles Do I Need? The Ultimate Guide for a Flawless Sew-In

It is the most common question we get here at Her Hair Company: "I'm getting a sew-in next week... how many bundles do I actually need?" There is nothing worse than sitting in your stylist's chair and realizing you don't have enough hair to finish your install, leaving you with thin, stringy ends. On the flip side, you don't want to overspend on hair you won't use.

The perfect number of bundles depends on three main factors: Length, Texture, and the Size of your Head/Lace piece. Let’s break down the math so you can confidently shop for your next flawless look!

1. The Golden Rule: Length Equals Weight

Here is the most important hair secret: all bundles weigh the exact same amount (usually about 100 grams or 3.5 ounces), regardless of the length.

Because they weigh the same, a 12-inch bundle will have a much longer weft (track) than a 26-inch bundle. The longer the hair, the shorter the track. Therefore, the longer you want your hair, the more bundles you will need to achieve a full look.

2. The Texture Factor

The texture of your hair extensions also plays a huge role in how full your hair will look.

• Straight Hair: Because it lays flat, Brazilian Straight Hair requires more bundles to look voluminous and thick.

• Curly & Wavy Hair: Textures like Brazilian Deep Curly or Water Wave naturally expand and take up more space. You can often get away with using fewer bundles for a curly sew-in compared to a bone-straight one.

3. Frontal, Closure, or Leave-Out?

What you pair your bundles with will dictate how much track space is left on your head.

• HD Lace Closures (4x4 or 5x5): Closures cover a small portion of your head. You will still need a standard amount of bundles to fill the rest of your scalp.

• HD Lace Frontals (13x4 or 13x6): A frontal covers your entire hairline from ear to ear. Because it covers so much space, you typically need half a bundle to one full bundle less than you would with a closure or a traditional leave-out.

📝 The Ultimate Bundle Cheat Sheet

Save this quick guide for your next purchase:

• For Short Bobs (10" - 14"): 2 Bundles are usually perfect, especially when paired with a closure or frontal.

• For Medium Lengths (16" - 22"): 3 Bundles will give you a beautiful, natural, full look. This is the sweet spot for most women, which is why our 3 Bundle Deals are our best sellers!

• For Long & Luxurious (24" - 30"+): You will absolutely need 4 Bundles (and sometimes 5 for extreme lengths over 30") to ensure your ends are thick and full from root to tip. Check out our 4 Bundle Deals for the best value on long hair.

Shop Smart at Her Hair Company

Getting the perfect install is easy when you have the right materials. Whether you want a natural everyday look or dramatic, head-turning volume, we have the perfect package for you.

Browse our premium Bundle Deals today and give your stylist exactly what they need to make you look flawless!