Please help me identify pickles on Costco Italian sub platter

I don't shop at Costco. A friend of mine brought a Costco sandwich platter (I believe it was Italian subs) to a gathering. There were two add-ons that came with the sandwiches: a garlic herb aioli, and a package of unnamed pickle slices. Please help me, I MUST figure out what kind of pickles they are, they were absolutely incredible.