We chose this harness because our dog is deep-chested, and her previous harness rode up her chest and rubbed against her armpits. With the third strap securing it in place and the straps positioned this way, the harness no longer rubs and twists very little. It feels sturdier and lighter at once. We've only had it for a week, so I can't say much about durability, but the material seems durable and of good quality.