Hair Extension Weight Guide: Which Is Right for Your Hair?

Picking the wrong weight is the most common hair extension mistake. Too light and you get wispy, see-through results that won't blend. Too heavy and you're fighting your clips all day. The right weight depends on your natural hair density, and once you know yours, the decision is easy.

We've helped 500,000+ customers find their perfect match over 12 years. This guide walks you through every weight Bombay Hair offers, which hair density each suits, and exactly how to measure your own hair at home before you order.

Weight in grams tells you how much hair is in the set. More grams means more wefts, more volume, and a fuller result. But "more" isn't always better. If your natural hair is fine or thin, a heavy set won't sit flat. The clips will show, the extensions will feel uncomfortable, and they won't blend.

The key is matching weight to density. A 220g set on medium-density hair looks incredible. That same 220g on very fine hair looks chunky and obvious. A 160g set on thick hair will be harder to blend if adding length but for additional volume works great - as thicker hair needs thicker extensions to blend seamlessly if adding length.

Weight is about proportion, not preference.

Bombay Hair clip-ins are available in 160g, 190g, 220g, 250g, and 270g. All are 100% human hair, thick from root to tip, with little to no silicone coating. For fine and thinning hair, our ThinLine Fill-Ins start at 50g and 80g.

How to Measure Your Hair Density at Home

The ponytail circumference method is the most reliable way to know your hair density without a salon visit. Pull all your dry, product-free hair into a low ponytail at the nape of your neck. Wrap a flexible measuring tape around it once.

• Under 2 inches: Fine/thin hair
• 2 to 3 inches: Medium hair
• 3 to 4 inches: Medium-thick hair
• Over 4 inches: Thick hair

If you've recently dealt with postpartum shedding or hormonal thinning, your current density may be lower than your "normal." Our hair extensions for thinning hair guide covers the best extension types for regrowth phases. For menopause-related thinning, our hair extensions for thinning hair guide has a full breakdown of what works at each stage.

Here's the direct breakdown. Use your ponytail measurement to find your column.

One thing to keep in mind: if you're between two weights, go heavier. You can always remove a weft to customize. You can't add hair you don't have in the set.

Bombay Hair Clip-In Ranges: Which Range is Which Weight

Every Bombay Hair clip-in range is named, and those names correspond to a specific weight. Here's how they map:

Classic Clip-Ins (20", 160g)

Our Classic Clip-Ins at 160g are our most popular choice for fine to medium-fine hair. At 160g in a 10-piece set, it gives you a natural-looking length boost without weighing down lighter hair. The hair is thick from root to tip, so even the lighter weight set looks full. Perfect if your ponytail measures under 2.5".

Classic Clip-Ins (20", 220g)

Our 20" Classic Clip-Ins at 220g hit the sweet spot for medium and thick hair, best-selling range. Same 20" length, more volume. If your ponytail is in the 2.5" to 3" range and you want a genuinely full transformation, this is the range. It's also a favorite for events and weddings where you want the full effect without going longer.

Classic Clip-Ins (22", 220g)

Same weight at 220g, but 2 inches longer. Our 22" Classic Clip-Ins are the pick for medium-hair customers who want noticeable length. Great for layered hairstyles where that extra length shows.

Goddess Range (24", 250g)

Our Goddess range is our maximum length set. At 24" and 250g, it works best on medium-thick to thick hair. This range is designed for customers who want flowing, dramatic length. Our 100% Indian Remy Human Hair stays thick from root to tip at this length, which is rare in the industry.

Bae Range (20"/24", 270g)

Our Bae range is our highest-weight clip-in set at 270g. Designed for thick-haired customers who want a full, cohesive blend. If your ponytail measures over 3.5" and lighter sets look thin by comparison, Bae is your range.

ThinLine Fill-Ins: The Fine and Thinning Hair Option

If your hair has thinned from hormonal changes, medical treatment, or simply genetics, standard clip-in sets aren't built for you. The wefts are too wide, the clips are too heavy, and the weight pulls on already-fragile roots.

Our ThinLine Fill-Ins are narrow clip-in pieces designed for targeted use. They come in 50g and 80g, in 12" and 16" lengths, and they're meant to add volume exactly where you need it, without loading down your whole head.

Common uses: crown thinning, part-line coverage, temple gaps from postpartum shedding. They clip in discreetly and blend because they're the same 100% human hair as the full sets. No one will know.

For a full guide on which approach works for hormonal hair loss, see our hair extensions damage guide for safe usage tips.

FAQ: Hair Extension Weight Questions

How many grams of hair extensions do I need?

For fine hair: 160g. For medium hair: 220g. For thick hair: 250g to 270g. For very fine or thinning hair: ThinLine Fill-Ins at 50g or 80g for targeted coverage.

What is the difference between 160g and 220g hair extensions?

60g more hair, which means more wefts and more volume. The 160g Classic Clip-Ins set has 10 pieces suited to finer hair. The 220g Classic Clip-Ins sets have more wefts and are built to blend into medium to thicker natural hair. The base construction is the same: 100% Indian Remy Human Hair, thick from root to tip.

Can I use 220g extensions if I have thin hair?

It depends on how thin. If your ponytail measures 2.5" or more, 220g will blend. If it's under 2", the clips and wefts may be visible. Our 160g Classic Clip-Ins are designed exactly for that scenario.

What are the lightest hair extensions for thinning hair?

Our ThinLine Fill-Ins at 50g are the lightest option we offer. They're designed for thinning hair, postpartum shedding, and targeted volume fills at the crown or temples. Use our color match service to get the right shade before you order.

Do heavier extensions damage hair?

Not when sized correctly. The issue comes from using a weight that's too heavy for your natural hair density. When clips are pulling because the wefts outweigh your hair, that's stress on the follicle. Match the weight to your density and use proper extension care, and clip-ins are one of the lowest-damage extension methods available.

Still not sure which weight is right for you? Try our free color match and weight consultation. You submit a photo, and our team matches your color and helps confirm the right range for your hair type.

xo, Team Bombay