How to Choose a Bonnet Size and Fit
Quick answer
Choose a bonnet by hair volume first, head size second. Long, curly or braided hair needs a roomy bonnet with adjustable ties (Kitsch's oversized and XL options are examples). Short or fine hair needs a snugger fit: elastic caps like Grace Eleyae's Slap come in M-Original and L. Slip's silk turban fits 21 to 28 inches. Most brands do not publish bonnet dimensions, so check fit descriptions.
Key takeaways
- Brands publish little size data: Slip lists 21 to 28 in; Grace Eleyae lists M-Original and L; Kitsch and Blissy do not publish dimensions.
- Roomy bonnets suit long, curly and braided hair; snug caps suit short or fine hair.
- Adjustable ties or drawstrings give the most control.
- Measure your head around the forehead and nape if a brand publishes a range.
- Gather hair first, then fit the bonnet.
What size bonnet do I need?
Start with your hair, not your head. A bonnet that fits a head perfectly can still fail if it has to hold a lot of hair, because volume pushes the bonnet off. Use this as a first filter.
| Your hair | Fit to look for | Published examples |
|---|---|---|
| Long, curly, coily or braided | Roomy, with adjustable ties | Kitsch oversized (roomy, extra-long adjustable ties); Kitsch XL (adjustable-fit ties, for longer lengths) |
| Extra-long or waist-length | Long shape | Blissy Cascade (Blissy says it is intended to cover waist-length strands) |
| Short, fine or straight | Snug, elastic | Grace Eleyae Slap (elastic band; M-Original and L) |
| Thick hair and you want a set size | One size with a stated range | Slip silk turban (21 to 28 in; Slip says it may be loose on short or fine hair) |
If you are between rows, pick the roomier option with ties. You can tighten a roomy bonnet but you cannot stretch a small one over more hair. The rest of this page explains how to check.
How do you measure and check fit?
Brands that publish a range give you something to compare, so measure before you order.
- Measure your head. Wrap a soft tape around your head above the eyebrows and ears, and over the widest part at the back. Note inches and centimeters.
- Compare to the range. Slip lists 21 to 28 inches (54 to 72 centimeters). If a brand does not say what the range measures, ask before you buy.
- Style your hair as you sleep. Measure with your hair in the style you will wear to bed. A big pineapple or a set of braids adds room that a bare-head measurement misses.
- Check the adjustment. Ties and drawstrings let you tighten; plain elastic grips one size only.
- Try it before bed. Put it on, bend over, shake your head gently. If it moves, adjust before you sleep.
What do brands actually publish?
Very little. Most bonnet pages give a name, a material and a price, and leave out dimensions.
| Bonnet | Size information published | Price |
|---|---|---|
| Kitsch Oversized | Roomy, extra-long adjustable ties; dimensions not published | $22 |
| Kitsch XL Adjustable | XL, adjustable-fit ties; dimensions not published | $22 |
| Slip Silk Turban | One size, non-adjustable, 21 to 28 in (54 to 72 cm) | $110 |
| Grace Eleyae Slap | M-Original and L listed; elastic band | $22.80 |
| Grace Eleyae Adjustable Slap | One size fits most; hidden drawstrings plus elastic | $28.45 |
| Blissy Bonnet | Large; measurements not published | $94.95 |
Slip is the only one here with a stated range. For the others, rely on the descriptive words: roomy, XL, adjustable, elastic. Those words show design intent, not exact size, so use them to match your hair.
Roomy or snug: which fit do you want?
Roomy bonnets hold more hair without squashing it. That matters for curls, coils, braids and long hair, where pressure flattens the shape you are trying to keep. Kitsch describes its oversized bonnet as double-layered satin with a roomy fit, suitable for most hair types including long and curly hair.
Snug caps hold their place better on short or fine hair, because there is little volume to push against the fabric. Grace Eleyae describes the Slap as a satin-lined cap that stays on at night thanks to an elastic band. Slip says its non-adjustable turban may be loose on short or fine hair, which shows what happens when a one-size bonnet meets small volume.
A roomy bonnet with loose ties can slide off, and a snug elastic cap that is too small can press on the hairline.
If your bonnet keeps coming off, read why a bonnet keeps falling off and best bonnets that stay on.
What about length and extra-long hair?
Length is a separate question from volume. A bonnet can be wide enough for your hair yet too short to cover it, so the ends hang out and rub the pillow.
For hair that reaches past the shoulder blades, look for a bonnet described as long or extended. Blissy describes its Cascade Bonnet as designed for extra-long hair, braids and extensions, with a long shape intended to cover waist-length strands; it is $89.95 in 100% pure mulberry silk and its dimensions are not published. Kitsch describes its XL Adjustable bonnet as designed for longer hair lengths, at $22, also without dimensions.
If you do not want a long bonnet, fold your hair up first. A loose pineapple or coiled braid shortens the length. Do not coil it tightly.
For curl pattern and volume, see best bonnets for curly hair.
How should the bonnet sit?
A bonnet that is the right size can still be put on wrong. Follow this order:
- Gather your hair first. Decide where it goes: crown, a loose braid or loose and flat.
- Hold the bonnet by the back edge. Place the back edge at the nape, then pull it forward.
- Cover the hairline. The front edge should rest on the forehead just above the brows, without pressing.
- Tuck stray ends. Pieces left out will rub the pillow.
- Tighten the ties last. Snug is enough. Tie a bow instead of a knot so that you can loosen it in the night.
In the morning, a line on the forehead means too tight, and a bonnet on the pillow means too loose.
Frequently asked questions
What size is a bonnet?
Most brands do not publish dimensions. Slip lists 21 to 28 inches (54 to 72 centimeters) for its turban, and Grace Eleyae lists M-Original and L. Kitsch and Blissy do not give measurements.
Should a bonnet be tight?
No. It should stay on without leaving a line on your forehead or pressing behind your ears. If it only stays on when it feels tight, it is too small or the wrong design.
What bonnet is best for long hair?
A roomy bonnet with adjustable ties, or a long-shape design. Kitsch's oversized and XL bonnets are $22 each, and Blissy's Cascade is $89.95 and described as intended for waist-length strands.
Do I need an adjustable bonnet?
Not if you have short hair and an elastic cap fits well. For long, curly or braided hair, adjustment helps because your hair volume changes with the style you wear.
Why is my bonnet too loose?
Usually the bonnet is too large for your hair volume or has no adjustment. Gather hair first, tighten the ties, or try a snugger elastic cap, as in why a bonnet keeps falling off.