This front facing design allows for easy, hands free carrying of your small dog. Side zip entry, legs out, head out design adds to your pups comfort. 1.5 wide adjustable straps with comfortable pads adds to your comfort. This is a size small which fits pups up to 14 inch chest girth, suggested weight under 4.5 lbs. used only a couple times as my pup grew to 6 lbs fairly quickly.