3D Stickers

Hey everyone. Brand new here and also brand new to 3D printing as I am currently looking into adding in to my current business which is mostly custom vinyl work and sublimation of items.

While I continue and start to look into equipment to get me started I have a quick question...

Recently one of the other parents on my son's baseball team had raised decals made for all the boys to put on their helmets. I have attached a photo of them and was curious..... is this something that looks to have been done with 3d Printing or is there another method being used here that I have yet to see?

Kawaii Gilding Translucent 3D Stickers ~ Cute Stickers, Sakura Hearts Cats Ice Cream Stickers, DIY Scrapbook Decoration, Planner Stickers. ... Pink Panther Stickers, Kawaii Stickers, 3D Stickers, Planner Stickers, New DIY Kid's Cards, Teen Party Favors, Gift Tag Decor.

definitely not 3d printed.
could be silicon moulded.