Is the Stanley water bottle over? A Gen Z trend forecaster thinks so.

• The Stanley water bottle was the top item that teens got for Christmas, a trend forecaster says.
• Casey Lewis watched hundreds of "haul" TikToks and saw the pricey water bottle over and over.
• But its popularity with younger teens might mean it's on its way out.

It seems that we have hit peak Stanley cup.

The massive, colorful insulated Quencher cups have become an object not just of lust, but of madness for a large portion of well-hydrated millennial and Gen Z women.