a web

The meticulously woven webbing made of sticky insect silk, each thread finer than a single hair. White softly glowing, it has been firmly attached at ever expanding intervals, creating a starburst pattern against the background. A few loose strands indicate this web has been through recent activity and freshly repaired.

It is a web.
It weighs a couple of pounds.

You identify a web.
It is an unsellable container.
It weighs one pound and twelve ounces, and it is worth about one silver.
Its keywords are web, strands, and silky.