Custom Contact Field not appearing in email notification - Dawn Theme

[OptegoVision]

I've created a custom contact form for a new site I am building.  The form is submitting correctly, however one field that is actually quite important is not coming through on the email notification.  I got the code for this field off of a YouTube video, but I can't figure out why the field doesn't come through.  Can anyone help?

Here is my code for the field in question:

<div class="field">
<div class="select">
<select id="ContactFormProduct" style="font-size: inherit; padding-top: 0.8rem;" class="field__input select__select" name="contact[product]">
<option selected disabled required value="">Choose a product:</option>
<option value="EpiGlare Single Phoropter Kit">EpiGlare Single Phoropter Kit</option>
<option value="EpiGlare Binocular Phoropter Kit">EpiGlare Binocular Phoropter Kit</option>
<option value="EpiGlare Handheld Desk Kit">EpiGlare Handheld Desk Kit</option>
</select>
<svg class="icon-caret" aria-hidden="true" focusable="false" viewBox="0 0 10 6">
<use href="#icon-caret" />
</svg>
</div>
<label for="ContactFormProduct" style="visibility: hidden;" class="field__label">Product</label>
</div>