Size: Extra Small; Extra small neck girth: 6 in. x 8 in. Extra small breast girth: 8 in. x 11 in. Extra small belt length: 3 in. Extra small weight limit: 4 lbs. Small neck girth: 9 in. x 11 in. Small breast girth: 10.5 in. x 16 in. Small belt length: 3.5 in. Small weight limit: 4 - 10 lbs. Medium neck girth: 11 in. x 13.5 in. Medium breast girth: 14 in. x 20 in. Medium belt length: 4.5 in. Medium weight limit: 10 - 20 lbs. Large neck girth: 13.5 in. x 16 in. Large breast girth: 18 in. x 27 in. Large belt length: 5 in. Large weight limit: 20 - 40 lbs. Extra large neck girth: 15 in. x 22 in. Extra large breast girth: 20 in. x 29 in. Extra large belt length: 5.5 in. Extra large weight limit: 40 - 70 lbs. You'll never have to worry about spotting your dog when he's wearing this bright orange harness, featuring a fleece lining for added comfort. A perfect way to make walks around the block more manageable, the harness has a flexible design and is available in your choice of size options.