creating a custom field that outputs a list

Hi,

I’m building a site for a client and trying to make things as simple as possible for him through a customized user panel.

In a blog post which will actually be a product page for his products I need to create a custom fields that outputs a ul list like this:

Material: wood
Height: 100 cm
Width: 10 cm
Lenght: 70 cm

but I’m not sure about how to do it.

I did a search online and someone suggested to create a normal custom field with every element to list to be separated by a comma and use php to divide them in a list. It could be a solution but I don’t know how to code that in php.

A visual separation in the post panel would also be easier for my client, adding each element in a field and then get the list ready on the website.

Can you help me? ??