Size Details - Chest 2XS: 28-32cm/11-12.6in; Chest XS: 32-36cm/12.6-14.2inch; Chest S: 36-44cm/14.2-17.3inch; Chest M: 44-48 cm/ 17.3-18.9 inch; L Chest: 48-54cm/18.9-21.3inch. Reflective Design - 2 reflective front straps, improve your dog's visibility in the dark, improve safety when walking at night to ensure your dog's safety. Breathable &amp; Lightweight - Ultra soft and super strong and lightweight made of soft breathable air mesh with smooth edge treatment to reduce rubbing and pulling on your dog's paws and neck, let your dog walk comfortably. < p>Easy to put on and take off - This Step-in harness is easy to put on and take off with 2 quick release buckles and magic tape, 2 service D-rings on the back can attach the leash when you step take a walk. Ideal for dogs that don't like harnesses to go over their head. Just need to put the dog's front paws in the hole, close the hook and loop fastener and snap the buckle. Super easy to use! 2 choices - We offer: 1 single harness or a set of harnesses with 1.5m leash. Perfect for puppies, small and medium breeds.