Ruffwear Jet Stream Dog Cooling Vest

The Ruffwear Jet Stream is a high-performance, athletic-style dog cooling vest designed for "fast and light" activities like trail running, mountain biking, or hiking. Unlike bulkier cooling coats, it is form-fitting and uses a zippered closure to keep the cooling effect close to your dog's core.

(Note: In recent years, Ruffwear has updated their naming convention—the Jet Stream is now often referred to as the Swamp Cooler Zip™, though many retailers still use the original name.)

## How It Works: Evaporative Cooling

The vest utilizes the same principles as human sweating. It features a three-layer construction on the chest and belly:

1. Outer Layer: A wicking mesh that reflects heat and encourages evaporation.

   
   

    

2. Middle Layer: An absorbent reservoir that stores water.

   
   

    

3. Inner Layer: A comfortable liner that transfers the cooling effect to your dog while keeping them relatively dry.

   
   

    

### Key Features

• Active Fit: The spandex back panel is stretchy and lightweight, providing UPF 50+ sun protection without adding bulk.

  
  

   

• Zippered Closure: A side zipper ensures the vest stays snug against the body, which is critical for the cooling tech to work effectively.

  
  

   

• High Range of Motion: Oversized armholes allow for a full stride, making it ideal for dogs that run or jump.

  
  

   

• Easy Recharge: To "reset" the cooling, simply pour more water over the vest or dunk it in a stream.

### Jet Stream vs. Swamp Cooler (Standard)

If you're deciding between Ruffwear’s two main cooling vests, here is the breakdown:

### Pro-Tips for Best Use

• Humidity Matters: Evaporative cooling works best in dry heat. In very humid environments (where the air is already saturated), the water won't evaporate as quickly, making the vest less effective.

  
  
  
  

   

• Sizing is Key: Because this is a form-fitting vest, you should measure your dog's girth (widest part of the rib cage). If your dog is between sizes, Ruffwear typically recommends sizing down for the Jet Stream to ensure the cooling panel stays in contact with the skin.

  
  

   

• Maintenance: It is machine washable on a gentle cycle. Use mild detergent and air dry to preserve the technical fabrics.

  
  

   

To get the right fit for the Ruffwear Jet Stream (now often labeled as the Swamp Cooler Zip™), the most important step is measuring your dog's girth—the widest part of their rib cage.

## Size Chart

Because this vest is designed for high-intensity activity, it has a formfitting, athletic cut. If your dog is in between sizes, Ruffwear recommends sizing down to ensure the cooling panel stays snug against their core.

Pro Tip: Make sure to also check your dog's neck circumference. Since this vest uses a zipper rather than buckles, there is no adjustment around the neck or chest once it’s zipped up.

## Color Options

The Jet Stream / Swamp Cooler Zip is typically available in light, bright colors designed to reflect solar radiation rather than absorb it. While availability can vary by season, the primary 2026 colors include:

• Biolumin Blue: A bright, punchy blue.

   

• Graphite Gray: A sleek, neutral gray.

   

• Aurora Teal: A vibrant, greenish-blue.

• Salmon Pink: A high-visibility warm pink.

   

All colors feature a light-colored chest panel (usually a pale gray) because that is the part that holds the water and needs to reflect the most heat.