Keep your small dog cool and comfortable with the innovative Pets Dog Vest Chest Strap Harness from Petpexi. Featuring a built-in wearable air conditioner, this harness quickly lowers your pet's back temperature to beat the heat with two adjustable cooling levels. Crafted from durable, breathable nylon mesh, it ensures all-day comfort with lightweight softness and secure triple-layer protection via magic tape, buckle, and D-rings. Equipped with night lights offering breathing and warning modes to enhance your pet's visibility and safety during nighttime walks. Suitable for small breeds and cats like Yorkshire Terriers, Chihuahuas, and more. Includes a 4.6ft leash, power cord, and instruction manual. Fully charges in 1.5 hours with approximately 2 hours of cooling time. Enjoy fast and free shipping across the USA at www.petpexi.com, where pet safety and quality come first.