Effective Boundary Training: The PetSafe Extra Collar Receiver for Pawz Away Outdoor Barrier helps correct unwanted behavior while maintaining safe zones Comfortable & Secure Fit: Designed as an easy fit pet collar, this adjustable waterproof receiver fits dogs or cats weighing 5 lbs or more with neck sizes ranging from 6"-28" for ultimate comfort Compatible & Versatile: Works with indoor and outdoor systems, making it a reliable multi-pet compatible gear solution for households that need consistent containment and training Global Mission, Local Care: With U.S. roots and worldwide reach, PetSafe delivers vet- and trainer-recommended solutions and exceptional customer support to create fields of joy for pets 25 Years of Trust: Since 1998, PetSafe has created safe, innovative, and trusted products that bring joy, enhance pet lives, and support the lifelong bond between pets and their families