Alfie Pet by Petoga Couture - Jaden Pet Backpack or Front Carrier with Adjustable Strap Please note that this listing is for size: Small. Measures 11.5"L x 7"W. Adjustable shoulder strap of 18 -32". Complete hands free, without any burden, whether to ride a bike, traveling ,shopping and walking . The neck elastic can adjust the size according to the dog's neck circumference, this design can prevent the dog climbed out of the bag. Zipper on both sides and guide design, convenient dogs wear, take off. Good soft material quality, breathable mesh ,comfortable clinging to your body, make the center of gravity is stable.