The Ruffwear Core Cooler™ is an add-on that cools dogs, adds additional support when lifting and assisting, and further stabilizes packs and harnesses. This three-layer chest panel uses evaporative cooling to efficiently pull heat from the dog’s core during warm temperatures and high intensity activities. To activate, wet the Core Cooler with water and wring out. The Core Cooler easily attaches to Ruffwear harnesses and packs using hook-and-loop sleeves:

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Select Size

Use this fit guide to select the appropriate size for your dog. Measurement is around the widest part of the rib cage.

17-22 in (43-56 cm)
22-27 in (56-69 cm)
27-32 in (69-81 cm)
32-42 in (81-107 cm)

Key Features

Additional Features

  • Provides load dispersion and stability
  • Made in Vietnam

Washing Instructions

  • Secure fasteners
  • Hand wash
  • Mild detergent
  • Air dry

Trail Tested Promise

All of our products are rigorously field tested and we proudly guarantee against defects in materials and craftsmanship.

Great Companions

Ratings & Reviews

Customer Reviews

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Elisabeth D.
United States


Keeps my Labrador cool. It's Awesome!

Diana W.
United States

Core cooler

I bought this for my sons dog. He said there was some chafing but he thought he just needed to do some adjusting He said that this product does work and does a good job. He is very pleased with the core cooler and web master harness

Nicki H.
United States

Beat the social heat!

This really helped we attached it to the webmaster harness and he wasn't complaining about the heat at a few min. I only wish they made one for humans.

Kelly C.
United States

Keeping cool in Florida

I live in Florida and hike often with my Catahoula. We try to stay near water but even then it can get hot, really hot. This Core cooler by Ruffwear is used with the singletrak pack. It is perfect for keeping my big boy cool. I highly recommend Ruffwear! I also have an older version of the swamp cooler that I use on my Pitbull rescue. It has held up wonderfully and keeps him cool as well.

Joelle B.
United States

Love it!

Happy pup makes us happy!