Fit first

Size Guide

Two minutes, a soft tape and a patient dog. Sizes vary between the makers we carry, so measure first and compare with each product's own details.

A small cream-coloured dog sitting beside a tailor’s measuring tape and folded fabric swatches

How to measure

  1. Chest

    Wrap a soft tape around the widest part of the rib cage, just behind the front legs. This is the measurement that matters most.

  2. Back length

    Measure along the spine from the base of the neck, where a collar sits, to the base of the tail.

  3. Neck

    Measure around the neck where a collar would sit. Keep the tape snug, with room for two fingers.

  • Choose by chest first, then check back length.
  • Between two sizes? Go up one, especially for deep-chested dogs and thick knits.
  • Sizes vary by maker. A Medium from one brand is not a Medium from another, so measure each time, and check the product photos and description for that maker's own measurements when they're listed.
  • Didn't fit? Eligible unused items can be returned within 30 days. See the refund policy.