How to bring up packers to my parents.

In gender fluid and I really want a packer for when I feel masculine (b/c dysphoria sucks). I saw a YouTube video where they showed how to make a DIY packer that actually looks really good. I really want to try making it and seeing if it alleviates my dysphoria. The only problem is, I feel to awkward to bring it up with my parents. The know my identity and they say they support me (although I feel like they think it's a phase). I have a friend who I know would be comfortable with me giving them money and them buying the stuff so I don't have to talk to my parents, the only problem with that is that they might notice when I wear it. So, any advice for bringing this up to my parents? Or should I risk it and ask the friend?