The Ruffwear Flagline Harness is a lightweight, multi-use harness.
is a fast, light, and comfortable harness that keeps dogs in their flow, from scrambling in the backcountry to conquering everyday obstacles. A handle and load-dispersing chest/belly panel make for easy lift-and-assist in a nimble design good for all-day wear. High adjustability and easy on/off make the Flagline secure and accessible, giving dogs a little boost and a lot of freedom when the path ahead is anything but flat.
Measure around widest part of ribcage. If the measurement is in between sizes choose the larger size.