Umisleep Silk Sleep Bonnet, 22 Momme

Hair rubbing against a pillow overnight can leave curls, braids, and longer styles feeling rough or looking frizzy by morning. The Umisleep bonnet puts a smooth mulberry silk lining between your hair and the pillow, while its adjustable band is designed to help keep the cap in place as you sleep.

Its large shape is aimed at longer or fuller hair, not just a close-fitting cover for short styles. That extra room is useful for tucking in mid-back to waist-length hair, but it may feel oversized if your hair is short or low-volume.

Technical details

The inner layer is 100% mulberry silk, listed as 22 Momme and 6A grade. A durable satin outer layer adds a second fabric surface, with the stated purpose of helping protect pillowcases from hair products and natural oils. The product is also listed as OEKO-TEX STANDARD 100 certified.

The bonnet measures 14.2 inches across the outside and 9.8 inches high. Its adjustable fit is given for head circumferences from 21.5 to 27 inches. A wide elastic edge and buckle let you alter the tension, they’re intended to help prevent the cap from slipping during the night, though the listing doesn’t establish how it will fit every sleeper.

Getting the most from it

This is designed for women with mid-back to waist-length straight, wavy, curly, braided, or loc’d hair, and for men with chin-to-shoulder-length curls, locs, or Afros. The roomy cut gives those styles space rather than pressing them into a compact shape. If you’re choosing between a close-fitting cap and a larger bonnet, this one favors accommodating more hair over minimizing bulk.

For example, before bed you can gather long curls or braids inside, position the buckle facing outward, then adjust the strap until it feels comfortably snug. The available head-circumference range is 21.5–27 inches, if you don’t know your measurement, fit outside that range is uncertain without that measurement.

Usage tips

Tuck all of your hair inside before tightening the band, and avoid pulling the strap so firmly that the edge feels uncomfortable. The instructions say to tuck away any excess strap once adjusted. A smooth lining can reduce friction and help retain moisture, but the product description doesn’t promise a specific change in breakage or frizz for every hair type.

The satin exterior may be useful if hair products or natural oils transfer to your pillowcase. It doesn’t replace your usual hair routine, and the listing doesn’t provide washing or care instructions, so don’t assume a particular cleaning method is suitable for the silk.

Practical doubts

Will it fit short hair? The bonnet is described as large and may feel oversized on short, low-volume hair.

Can the fit be adjusted? Yes. It has a soft wide elastic edge and an adjustable buckle, with a listed head-circumference range of 21.5–27 inches.

What is the inside made of? The lining is listed as 100% 22 Momme, 6A-grade mulberry silk, the outside is durable satin.

When it makes sense

It makes sense if you want a roomy sleep cap for longer, thicker, curly, braided, or loc’d hair and value a silk lining over a basic cap with no stated silk interior. You may want to skip it if you have short, low-volume hair or prefer a close-fitting design. The clearest reason to choose it is the combination of a large cut, adjustable buckle, and silk lining, if compact fit matters more than space for hair, a smaller-style bonnet would be a better direction.