The MOMARSH Versa-Vest was designed to fit any sporting dog for life. The Versa-Vest Oversized Neck and Chest Panel is a replacement panel for very large dogs with chests that measure 35-42 inches in circumference. Use in conjunction with your regular Versa-Vest to fit dogs requiring a vest size of 5XL to 7XL. Finally, a premium vest solution that will REALLY fit very large dogs and will help keep them warm and safe in any cold weather hunting condition. The MOMARSH Versa-Vest goes where NO VEST has gone before!