How long is 20 inch hair, really? Measured straight, from the crown down, 20" reaches the underarm, just below the armpit on an average 5'5" frame.
Texture changes everything. Length is always measured straight, so curl pattern shortens what you actually see in the mirror. Body wave and loose wave lose roughly 1 to 2 inches. Deep wave, kinky curly and afro kinky can take 3 to 4 inches off, so 20" in deep wave wears closer to 16" to 17". If you want underarm length in a curly texture, size up two inches.
How many bundles do you need at 20"? Plan on 3 bundles for a full sew-in. The rule of thumb: 10 to 12 inches needs 2 bundles, 14 to 22 inches needs 3, and 24 inches and longer needs 4 because the wefts thin out as they get longer. Add a closure or frontal for a seamless part.
Who it suits. 20 inch is underarm length — photo-ready volume you can still throw into a ponytail, and the single most popular length we ship. Want the full visual breakdown? Read our guide to 20 inch hair.
Everything on this page is 100% human hair, shipped from our Atlanta warehouse (not overseas), with free shipping on orders over $99. Trusted by more than 10,000 stylists since 2014 and rated 4.8 stars across 3,000+ Google reviews. Shop the full human hair bundles and human hair wigs ranges.
