Size Small : Chest girth 22-25in£¬neck girth 14-18in.<br> Size Large : Chest girth 28-35in£¬neck girth 18-24in.<br><br><b>Material:</b><br><br> 100% selected tough nylon<br> Breathable soft mesh padding <br> <br> <b>Features:</b><br><br> <b>Hook and Loop Design</b><br><br> 3 loop patch on the back<br> Double on the both sides (S:2 x 5.5 in, L: 2.95 x 6.7 in)<br> One on the middle (width1.57 in). <br> Easy for dogs to carry their own gear when they are out exploring, hiking and training.<br> One small loop patch on the front<br> (S: 2.36 x 1.37 in, L: 2.75 x 1.96 in)<br> You can put your dog's id tag on it for identification and loss prevention.<br><br> <b>Double Metal Ring</b><br><br> Allows leash/water bottle/poop bag dispenser/dog toys to attach.<br> Reduces the weight of your backpack while freeing your hands.<br><br> <b>Comfortable Handle</b><br><br> Special rubber wrap-around handle design protects hands while increasing friction.<br>