Why there is elastane in bamboo clothing

Short answer: Elastane makes the fabric pull back into shape. Without it a garment would grow with every hour you wear it.

What elastane does

Elastane is a fibre that can stretch to several times its length and pull all the way back. It is laid into the yarn as a fine thread, and the rest of the fabric follows. Two to five percent is enough to change everything.

Where it matters most

In underwear, socks, leggings and activewear elastane is decisive. It is the difference between a waistband that stays put and one that gives up after an hour. See bamboo underwear for women.

Where it is not needed

In nightwear, loungewear and loose t-shirts elastane matters less, because the garment does not have to follow the body. Here pure bamboo fabric is often softer. See bamboo nightwear for women.

The price of elastane

Elastane does not tolerate heat and fails before the cellulose fibre does. Wash at thirty degrees and avoid hot tumbling, and the garment lasts twice as long. See bamboo socks for women.

Frequently asked questions

Is elastane the same as lycra

Lycra is a brand name for elastane. Spandex is the American word for the same thing.

How much elastane is normal

Two to five percent in underwear and up to ten in activewear.

Can elastane be avoided entirely

Yes, but then the cut has to be loose, or the garment stretches out.