1Set =1pcs Helmet + 1pcs sunglassesHelmet Size:Small: 4, head circumstance about 31.7cmMedium: 5, head circumstance about 39.8cmLarge: 6, head circumstance about 47.7cmSunglasses is one size for all, NOT suit for small face dogs(Like Chihua hua, Minlature Pinscher ), good for Bichon, pugs, bull dogs, golden retriever etc. Attention: This helmet is for big face cats, small, medium and large dogs. (Small cats not suitable)Pls check the size with your dogs/cats before buying, thanks! Material: ABSColors: black, pink, orange