Ethical Pets-Lamb Print PJ's XXS: Blue. A fun little onesie for your pet at night! This package contains one PJ onesie for pets measuring between 6 inches and 8 inches long. Measure your pen from the base of the neck to the base of the tail. Comes in a verity of sizes and designs. Each sold separately. Made of 65% polyester/35% cotton. Imported.