Pet bed fits 18-inch long dog crates & works great as a stand-alone pet bed | Pet bed is ideal for "Tiny" dog breeds weighing up to 6 pounds | Pet bed is not ideal for excessive chewers.  We love this bed the best for the fact that it holds up well with regular machine washing & drying.  We recommend washing/drying before first use.  We always use these when taking our dogs to the vet, if im carrying several.  Puppy pad in the bottom, bed on top.  Works perfectly!