Gooby Choke Free Freedom Mesh Harness Specially Made for Small Dogs, X-Small, Black Soft synthetic lambskin strap Micro suede outline Sizing by weight XS:1-4 lb, S:4-7 lb, M:7-17 lb, L:16-25 lb, XL:23-30 lb Please measure your dog for a perfect fit. Sizing by weight is only a recommendation