I've seen denim listed from 5 oz to 20 oz.How do I know what to buy without touching it.

I've seen denim listed from 5 oz to 20 oz.How do I know what to buy without touching it.
I've seen denim listed from 5 oz to 20 oz.How do I know what to buy without touching it.

I've seen denim listed from 5 oz to 20 oz.How do I know what to buy without touching it.
我看到销售列表牛仔布自5盎司到20盎司.如果我没有手感样,我如何知道买哪种我喜欢的布料?

我看到牛仔布自5盎司到20盎司都有售。如果我不摸一下，我如何知道买哪种盎司的布料？

我看到粗斜纹棉布从5盎司列至20盎司.如果我不摸一下面料的话,我怎么知道该买哪种?