Subject: Stay Comfortable All Year with ThermSoles! 🌡️

Hi [First Name],

Tired of dealing with cold feet in winter or sweating it out in summer? Meet ThermSoles – your feet’s new best friend. 

- Self-heating and cooling insoles
- Control the temperature with a simple app

Why wait? Feel the difference today. Click here and step into comfort!

Warm Regards,
[Your Name]