You have your favorite running vest - this one's your dog's. The Trail Runner Running Vest opens up new territory by making it easy and comfortable for your running buddy to carry their no. 1 trail essential: hydration. Mindful design and material choices keep the vest breathable, balanced, and bounce-free. Two zippered side pockets hold the two included Hydrapak soft flasks, and you can stash the Trail Runner Bowl and pick-up bags in the top zippered pocket. A reinforced webbing tow loop at the rear offers a strong leash attachment point, optimally positioned for dogs that like to take the lead.