While I personally do not know as I've not made a purchase, I do believe if you have questions you can aask via the contact page.
I believe you can find the contact page at the bottom of the SOM Shop page.
I found this information here:
Any questions can be sent to us through our contact page or by phone at ********** (USA Phone number). Please have an order number, order date or email used with your order to help us serve you better.
On the main SOM Shop page at the bottom there is a link to the contact page and a phone number for these questions.
Have your order number, date, or email used with your order handy.