By Sarah Chen · Reviewed by Dr. James Carter, DVM · Last reviewed: May 15, 2026
We tested 12 cooling vests over the summer. Here are the 5 that actually keep dogs cool, plus a sizing chart by breed.
Good fit if you have
Skip if
Best overall cooling vest
Soak, wring, snap on. The Swamp Cooler stays cool for 3 to 5 hours in dry heat. Best pick for active dogs on summer hikes.
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Best for long body dogs
Full belly coverage is rare. Best for dachshunds, corgis, and long body breeds that gel vests do not fit well.
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Best for short walks and travel
Light, fast, and easy. Great for park visits, vet trips, and dogs that hate gear. Skip for long hikes.
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Best budget cooling vest
Solid value under $40. Cools well for 2 hours. Best for backup or second vest in the car.
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Best gel vest, no water needed
The pick for humid climates where wet evaporative vests struggle. Toss the gel pad in the fridge between walks.
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| Feature | Ruffwear | HURTTA | Kurgo | KOOL COAT | PetSafe |
|---|---|---|---|---|---|
| Cooling Type | Wet evaporative | Wet evaporative | Wet evaporative | Wet evaporative | Gel insert |
| Best Climate | Dry heat | Dry to mild humidity | Dry heat | Dry heat | Humid heat |
| Cooling Duration | 3 to 5 hours | 2 to 4 hours | 2 hours | 2 hours | 90 minutes |
| Weight (M size) | 0.9 lb wet | 0.8 lb wet | 0.7 lb wet | 0.6 lb wet | 1.3 lb |
| Fit Range | XXS to XL | XS to XL | S to XL | S to L | S to XL |
| Machine Washable | Yes, cold cycle | Yes, cold cycle | Yes, hand wash | Yes, cold cycle | Cover only |
| Water Capacity | High | High | Medium | Medium | None |
| Reflective Trim | Yes | Yes | Yes | No | Yes |
| Leash Ring | No | No | Yes | No | No |
| Price | $59.95 | $49.99 | $44.99 | $34.99 | $39.99 |
Measure your dog's chest at the widest point, right behind the front legs. When between sizes, size up.
| Size | Chest | Weight | Example Breeds |
|---|---|---|---|
| XXS | 13 to 17 in | 5 to 10 lb | Chihuahua, Yorkie, Mini Poodle |
| XS | 17 to 22 in | 10 to 20 lb | Pug, Shih Tzu, Mini Schnauzer |
| S | 22 to 27 in | 20 to 35 lb | French Bulldog, Beagle, Cocker Spaniel |
| M | 27 to 32 in | 35 to 55 lb | Border Collie, English Bulldog, Aussie Shepherd |
| L | 32 to 37 in | 55 to 75 lb | Lab, Golden Retriever, German Shepherd |
| XL | 37 to 42 in | 75 to 100 lb | Rottweiler, Husky, Doberman |
| XXL | 42 in plus | 100 lb plus | Mastiff, Great Dane, Newfoundland |
Yes. Wet evaporative vests cool a dog 10 to 15 degrees F below air temp in dry heat. The water in the vest evaporates and pulls heat off the dog. Gel vests work by pulling heat into the gel pad. Both work, but evaporative vests last longer per charge and gel vests work better in humidity.
Measure the chest at the widest point, right behind the front legs. Compare to the brand's size chart. If between sizes, size up. A vest that is too tight blocks airflow. A vest that is too loose lets cooling air escape. Our sizing chart above lists chest size, weight range, and example breeds for each size.
Wet evaporative vests like the Ruffwear Swamp Cooler stay cool for 3 to 5 hours in dry heat. In humidity above 70 percent, evaporative cooling drops to 1 to 2 hours. Gel vests like the PetSafe stay cool for about 90 minutes per fridge charge. Re-soak or swap the gel pad as needed.
Yes, but check the fit carefully. Flat faced breeds have wide, short chests. The HURTTA Cooling Wrap and Kurgo Core fit well. Pair the vest with shade, water, and walks before 8 AM. See our brachycephalic breed guide for more details.
Wet evaporative vests lose most of their effect above 70 percent humidity. Water cannot evaporate fast in humid air. In humid climates like the Southeast US, gel cooling vests like the PetSafe work better. Or stay indoors with AC and a cooling mat during peak heat.
No. Take the vest off once it dries out. A dry vest traps heat instead of releasing it. Re-soak every 2 to 4 hours. Check the skin under the vest for chafing or hot spots. Remove if your dog seems uncomfortable.
Most cooling vests machine wash on cold cycle. Air dry. Do not put cooling vests in the dryer, the heat damages the cooling fabric. Hand wash gel vests with mild soap. Check the manufacturer instructions for your specific product.
Puppies over 4 months and 5 lb can wear a properly sized cooling vest. Puppies under 4 months should not wear a wet vest, the cold can drop body temp too fast. For young puppies, use a cooling mat in a shaded area instead.
No. A cooling vest is for outdoor walks, hikes, and car rides on hot days. Indoors, AC plus a cooling mat is the safest combo. On 90 degree days, even a cooling vest is not enough for long outdoor activity, especially for flat faced or thick coated breeds.
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