Devil + Egg = Deviled Egg….Get it? I thought it was pretty clever myself. What I think is even more clever is putting your two cats in this costume for Halloween. Both your cats will love it! DURABLE -Machine sewn ECO-FRIENDLY - 10% of profits donated to planting trees at https://www.generation-now.com/ - Fabric made in the USA from 100% recycled plastic ZERO WASTE As with all of our items, this costume is packaged with: *100% recycled paper *100% recycled and compostable envelopes *No plastic SIZE The dimension of the hole for your cat's head: Diameter: 3 inches Approximate circumference: 9.5 inches. This costume is made to fix most cat sizes! No sizing is necessary!