How to judge quality when shopping online
Short answer: You cannot feel the fabric through the screen, but you can read the fibre content, the fabric weight and the description of what the item is intended for. Those three say most of it.
The fibre content
It tells you how soft and stretchy the fabric is. See how to read a textile label.
The weight
A light summer quality and a heavy basics quality look the same in a photo. See what fabric weight and GSM mean.
What the item is intended for
A description that says when the item is meant to be worn says more than a general text.
The brand
If you know a brand, you usually know what you are getting. See Bamboo Basics.
Buy one first
If you do not know the model, buy one piece before a whole pack. See underpants in multipacks.
The size
Measure against the chart rather than your habit. See the size guide.
If it does not fit
Then the item can be exchanged. See returns and exchanges.
Reviews
The experiences of others say something about fit and durability that does not appear in a description. Read especially the ones that mention size. See bamboo clothing for women.
Frequently asked questions
What can you see on a product page?
Fibre content, weight and what the item is intended for.
Is expensive always better?
No, but the price difference often reflects yarn, fabric weight and construction.
How do I avoid a wasted purchase?
Buy one piece first, and measure against the chart.