minky. The light weight one with the colorful flower print will likely be a gift...Jenny, Shanny, or Michelle. The blue one below is heavier weight. The minky material is thicker and it's backed with flannel instead of cotton. It's perfect for these cooler nights to keep the little Piggie nice and cozy. I think I'll make some more for the little boys...Oliver, Fletcher, Connor and Davis. I found a nice sage green minky but need something else for backing. I'll have to go hunt down something.