Holy Underwear Batman!

I grew up going to Southern Baptist churches and we had classes periodically to better understand cults such as the Mormans and Jehovah’s Witnesses, etc. So, what I want to know is, why they don’t sell the famous holy, seamless underwear, like they say Jesus wore, on this site.
One section of the site provides advice by region of the country from other Mormon missionaries who have been there, done that. Here are some examples:

Louisville, KY: “be open and friendly get to know people treat them as or equal. they are not dumb they just talk funny.”

Chicago, IL: “The biggest problem was probably missionary gossip.”

Rochester, NY: “There is so many “born again” people here it’s crazy.”

Houston, TX: “It surprised me how fast mold could grow.” and “We had a few cases of elders getting too close with the local sisters so watch out for that.”