Our Mission At Stellar Mènage, we k what it's like to want the best for our pets, which lead us to create the highest quality products that are meant to last. We knew that pets came in all shapes and sizes and this lead us to create 11 unique different sizes. We spent months designing and perfecting the collar to ensure that the collar is a perfect fit with a near 360° neoprene interior! Our sizes range from 7'' all the way to 30''! Our : Stellar Products At Stellar Mènage, we have a dedication to provide the highest quality products to our customers. That is why all of our products come with a 1 year for manufacturer defects in material and craftsmanship. Please contact us us through our email listed on the back of your product's packaging if you believe that your product is defective. Please Note: Our does not cover damages caused by the consumer Sizing Guide Size 1 (Adjustable Length: 7''8.5'' / Width: 0.75'') Size 2 (Adjustable Length: 8.5''10'' / Width: 0.75'') Size 3 (Adjustable Length: 10''11.5'' / Width: 0.75'') Size 4 (Adjustable Length: 11.5''14'' / Width: 0''.75) Size 5 (Adjustable Length: 14.5''17.5'' / Width: 1'') Size 6 (Adjustable Length: 17''20.5'' / Width: 1'') Size 7 (Adjustable Length: 20.5''23.5'' / Width: 1'') Size 8 (Adjustable Length: 18''21'' / Width: 1.5'') Size 9 (Adjustable Length: 21''24'' / Width: 1.5'') Size 10 (Adjustable Length: 24''27'' / Width: 1.5'') Size 11 (Adjustable Length: 27''30'' / Width: 1.5'') Package Content Included with your ordered collar is a custom Stellar Mènage foam padded box Washing Instructions Soak the collar in warm water with a small amount of dish soap or laundry detergent. Use a small brush/toothbrush to scrub the collar throughout. Rinse collar with water and use a towel to dry to metal hardware. Hang collar until fully dry.