Sizing A Dog Coat Sizes are Now Avialable for Teacups to Medium size Dogs. For the "Best Fit" please measure from the base of the dogs neck to the base of their tail. • Size: 6 – Neck 4.5” – 6.5” Length 6" Up to 2 - 3 lbs • Size: 8 – Neck 7 - 9.5” Length 8" Up to 6 - 8 lbs • Size: 10 – Neck 9.5” – 11.5” Length 10" Up to 9 - 14 lbs • Size: 12 – Neck 12” – 13.5” Length 12" Up to 14 - 25 lbs • Size: 14 – Neck 14” – 15.5” Length 14" Up to 20 - 35 lbs • Size: 16 – Neck 16” – 17.5” Length 16” Up to 25 - 40 lbs • Size: 18 – Neck 18” – 19.5” Length 18” Up to 45 - 60 lbs