Plain black is the most useful thing in a dressing-up box, because it goes with everything and commits to nothing. Layer it under a witch's hat and it is a witch; add a collar with a small skull and it is something else entirely; use it on its own and it is simply a dark cape on a dark evening. It is the piece you reach for when you already own the accessories and want something to hang them on.

There is one version of this and one photograph of it, which is worth saying plainly rather than dressing up. No colour choice, no size letters, and no measurements have been supplied to us. What we can tell you is what the cape is for: it sits over the back and shoulders and is designed to be worn briefly, over the top of whatever else your pet is already wearing, rather than as a garment in its own right.

• Plain black, with no print or trim
• A single version, with no size or colour options
• Layers under hats, collars and bibs
• Works as a standalone costume on its own
• Suits cats and small dogs

One thing worth knowing. As with any cape, wear is for short supervised periods only.

Who it's for: owners building a costume from separate pieces who need a neutral black layer underneath, and anyone who wants the simplest possible seasonal item for a small pet.