English to Spanish Other Cosmetics, Beauty Hotels / Resorts / Spa / Massage

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3. Dry Treatments.
a. Option 1: Full-sheet wrapping

This method employs a twin-size flat sheet to cover the table and wrap the guest. When working with a **large** guest (over 200 pounds), it may be necessary to use a full-size sheet. When using this method, offer the guest a robe or additional towels when the guest is moving from the dressing area to the table.
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In English calling someone "large" is an euphemistic way to call them "fat".

So what would be the Spanish equivalent?

Could it be "un huésped de contextura gruesa"?

Could there be a more appropriate term?

Please help me.