Why two pieces with the same composition can feel different

Short answer: The composition says which fibres are in it, not how fine they are, how they were spun or how the fabric is knitted. All of that decides the feel.

The fineness of the fibre

Two fabrics with the same fibre can use coarse or fine fibres. Fine fibres feel markedly softer. See facts about bamboo.

Spinning and yarn

How tightly the yarn is spun changes both feel and durability. Loosely spun feels softer but pills more.

The knitting

A dense knit and a loose knit of the same yarn behave differently. That is why fabric weight says more than the composition. See bamboo underwear for men.

Finishing

New fabric can be treated so it feels fuller than it is. The effect washes out. See washing and care.

That is why price matters

The difference between two pieces with the same composition lies precisely in those steps. See bamboo underwear for women.

Frequently asked questions

Why do two pieces with the same composition feel different?

Because the composition says nothing about the fineness of the fibre, the spinning or the knitting.

Does fabric weight say more than the composition?

About how a piece behaves, yes. The composition only says which fibres are in it.

Can finishing be misleading?

Yes. New fabric can be treated so it feels fuller. The effect washes out.