The default product description lists specifications — material, dimensions, weight — because that information is easy to gather and easy to write. It's also rarely what actually convinces someone to buy. The question a shopper is really asking is simpler: will this solve my actual problem, and is it worth it?
Lead with the outcome, not the feature
"Made from 400gsm brushed cotton" is a feature. "Heavy enough to hold its shape without feeling stiff — the kind of hoodie you reach for in October and still wear in February" describes an outcome. Both pieces of information can appear in the same description, but the outcome needs to come first, because that's what actually earns the read past the first line.
Write for the specific doubt, not a generic pitch
Every product has a specific hesitation attached to it. For clothing, it's often sizing and fit. For a service, it's often whether it's worth the price. For a tool, it's often whether it'll actually get used. A strong description directly addresses that specific doubt instead of writing generic enthusiasm around it — "runs slightly large, order your usual size" solves more doubt than three adjectives about quality ever will.
Keep the actual facts close by
None of this means dropping the specifications — some shoppers do want exact dimensions or materials, and for certain categories that information is what closes the sale. Keep it available, just below the fold or in a clearly labeled section, rather than leading with it.
A description that answers "will this work for me" first, and "what exactly is it" second, will consistently outsell one that only does the second part well.