This soft knit collar is meant to be an accessory, like a necklace. The V at the back makes it lighter and more flexible than a full collar would be, and it fastens at the front (or the back, if you like) with a hook-and-eye closure. Stick a vintage brooch on it, or layer it with gold- and silver-chain necklaces.
The collar is made from lightweight acrylic yarn, which is stretchy and very soft (and shouldn't be irritating, like wool). It measures about 15 inches around the center circumference. It can be spot-cleaned or steamed, if necessary.