Ruffwear Swamp Cooler Cooling Dog Harness

by Ruffwear
Starting From: $74.99 Our Price: $74.99
In Stock Online

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  • Lightweight, durable dog cooling harness
  • Evaporative cooling system with three-layer design
  • Six adjustable points to fully customize to your dog's shape
  • Two leash attachment points
  • Padded handle to assist your dog over rough terrain
  • Reflective material for optimum visibility
  • Available in a variety of sizes and three different colours

The lightweight and durable Ruffwear Swamp Cooler Cooling Dog Harness keeps your dog cool on the go. It functions with an evaporative cooling system that relies on a three-layer design that is highly absorbent and encourages evaporation. To use the harness, simply pour water on the material, or dunk the whole harness in water. The middle polyester non-woven felt layer rapidly absorbs water. The outer layer polyester air mesh layer then releases the evaporated water to help your canine regulate its core temperature. Rehydrate the harness as needed to help your dog maintain a safe temperature on longer outings.

The Swamp Cooler Harness design provides shade and sun protection with a UPC rating of 50+. The two leash attachment points on the back of the harness let you choose the connection point that best suit's your dog's walking style. Use the top handle to provide support or assist your dog across difficult terrain. The ITW Nexus Mach side buckles let you easily remove and put on the harness. The buckles also help you adjust the harness to fit your dog’s unique size and shape. Reflective trim adorns the sides and chest of the vest to provide better visibility in low light and the light loop is the ideal connection point for the Ruffwear Beacon. The Swamp Cooler Cooling Dog Harness is available in a variety of sizes and colours. Please see specifications for additional information.

Explore Ruffwear's full line of collars, harnesses, and seasonal and outdoor gear for dogs here.


Size Guide

Size Chest Girth
XX-Small 33.0 - 43.0 cm | 13 - 17 in
X-Small 43.0 - 56.0 cm | 17 - 22 in
Small 56.0 - 69.0 cm | 22 - 27 in
Medium 69.0 - 81.0 cm | 27 - 32 in
Large - X-Large 81.0 - 107.0 cm | 32 - 42 in

How to Measure Your Dog



  1. Neck: Measure the circumference of the base, leaving enough space to fit two fingers comfortably.
  2. Lower Neck: Measure the circumference of the area above the shoulder blades towards the top of the chest, leaving enough space to fit two fingers comfortably.
  3. Chest Girth: Measure the circumference of the widest part of the chest behind the front legs.
  4. Length: Measure the length of your dog's back from the top of their shoulders to the base of their tail.
  5. Height: Measure the distance from the floor to the top of your dog's shoulder blades. Your dog needs to be standing on all four legs.
  6. Paw Width: Measure the widest part of the paw. You'll get a better measurement if your pup is standing.
  7. Paw Length: Measure the distance between the "heel" and the longest toe nail. You'll get a better measurement if your pup is standing.
  8. Muzzle Length: Measure the nose length from the tip to the crook where you want the muzzle to sit comfortably below the eyes.
  9. Muzzle Width: Measure the muzzle's circumference at the widest part, leaving space for two fingers to ensure a comfortable fit.
  10. Weight: Step on a scale while holding the dog, then subtract your weight from the total. A dog scale is conveniently located at all our locations.

Get more tips for finding the perfect fit for your dog's adventure gear in How to Measure Your Dog.


Please secure all fasteners and handwash using a mild detergent in cold water. Please hang to dry and do not dry clean or use bleach on the product.