By Mike Torres, Outdoor Specialist · Reviewed by Dr. James Carter, DVM · Last reviewed: May 14, 2026
Large dogs need bigger cooling products. Most cooling beds top out at 80 to 100 pounds. For Great Danes, Mastiffs, Newfoundlands, and Saint Bernards, you need XL or XXL options. We tested 6 oversized cooling products on dogs from 80 to 150 pounds. Here are the 4 that earned a spot.
Large breeds generate more heat than small breeds. More muscle mass means more metabolic heat. Thick coats trap that heat. Many large breeds were developed in cooler climates and are not built for hot summers. Newfoundlands, Saint Bernards, and Bernese Mountain Dogs especially struggle above 80 degrees Fahrenheit.
The American Kennel Club lists large and giant breeds in the high-risk group for heatstroke. The AVMA recommends active cooling for these breeds during summer months. That means shade, water, AC, and cooling gear like beds or mats.
Standard cooling beds top out at 80 to 100 pounds. For dogs over 100 pounds, the bed frame fails or the foam compresses too quickly. XL and XXL products use thicker foam, stronger frames, and larger surface areas. They cost more but they last.
| Product | Size | Max Weight | Cooling Type | Price |
|---|---|---|---|---|
| K&H XL Water-Fill Cooling Bed | 30 x 40 inches | 100 lbs | Water-fill + orthopedic foam | $89.99 |
| Coolaroo XL Elevated Bed | 55 x 35.5 inches | 150 lbs | Elevated mesh | $79.99 |
| Chillz XL Pressure-Activated Gel Mat | 35.4 x 43.3 inches | 120 lbs | Pressure-activated gel | $59.99 |
| FurHaven XXL Orthopedic Cooling Bed | 44 x 35 inches | 150 lbs | Gel-infused memory foam | $129.99 |
Best XL cooling bed for indoor large breeds
The K&H XL fits dogs up to 100 pounds and combines water-fill cooling with orthopedic foam. The water layer cools 12 degrees below ambient for 6 to 8 hours. Foam supports senior large breeds with joint pain.
Best for very large dogs and outdoors
Holds dogs up to 150 pounds. The 55-inch length fits Great Danes, Mastiffs, and Newfoundlands. Steel frame, breathable mesh, 5-year warranty. Best outdoor option for giant breeds.
Best XL gel mat for travel and crates
Largest gel mat we tested. Fits 80 to 120 pound dogs comfortably. No setup, no water, no power. Cools for 3 to 4 hours per session. Folds flat for car travel even at XL size.
Best plush XL bed with bolster
5-inch foam with cooling gel infusion. Bolster sides give large dogs a sense of security. Holds up to 150 pounds. Best for indoor large breeds that need joint support plus cooling.
| Breed | Avg Weight | Recommended Bed Size |
|---|---|---|
| Labrador Retriever | 55 to 80 lbs | Large (40 x 30 in minimum) |
| Golden Retriever | 55 to 75 lbs | Large (40 x 30 in minimum) |
| German Shepherd | 65 to 90 lbs | Large to XL (44 x 32 in) |
| Bernese Mountain Dog | 80 to 115 lbs | XL (48 x 35 in) |
| Rottweiler | 85 to 130 lbs | XL (48 x 35 in) |
| Newfoundland | 100 to 150 lbs | XL or XXL (55 x 35 in) |
| Great Dane | 110 to 175 lbs | XL or XXL (55 x 35 in) |
| Saint Bernard | 120 to 180 lbs | XL or XXL (55 x 35 in) |
| Mastiff | 130 to 230 lbs | XXL (55+ x 36+ in) |
Large breeds run hotter and overheat faster than small dogs. Watch for heavy panting, drooling, and weakness during summer. A cooling bed helps prevent heatstroke but does not replace careful monitoring on hot days.
Read the heat safety guideThe Coolaroo XL Elevated Bed holds up to 150 pounds. The K&H XL Water-Fill Cooling Bed holds up to 100 pounds with orthopedic foam. The FurHaven XXL Cooling Bed holds up to 150 pounds with memory foam. All three are sized for Great Danes, Mastiffs, and Newfoundlands.
Yes. Large dogs generate more body heat from their muscle mass. They also have a higher body weight to surface area ratio, which makes heat dissipation slower. The American Kennel Club lists large and giant breeds among the highest-risk groups for heatstroke in summer.
The Chillz XL pressure-activated gel mat (35 x 43 inches) or the Coolaroo XL elevated bed (55 x 35 inches). Great Danes are long, so length matters more than width. Measure your dog nose to tail when lying down. Add 6 inches. Get a product at least that long.
Yes for short outdoor sessions. Cooling vests use evaporative cooling (you wet the vest, the water cools as it evaporates). They work for 1 to 3 hours on a hot day. For long-term cooling at home, a bed or mat works better. Combine vest and bed for maximum effect.
Measure your dog from nose to base of tail when lying down. Add 6 to 10 inches. The result is the minimum bed length. For width, add 6 to 8 inches to your dog's shoulder width when lying on their side. A 100-pound Lab needs at least 40 x 28 inches.
Three reasons. First, larger body mass means more heat to dissipate. Second, thick-coated breeds (Newfoundlands, Bernese Mountain Dogs) hold in more heat. Third, large breeds are often less heat-tolerant by genetics. Many were bred for cooler climates. Cooling beds reduce baseline heat stress.
Yes if you choose well. The Coolaroo XL has a 5-year frame warranty and holds 150 pounds. The K&H XL uses heavy-duty fabric and orthopedic foam designed for repeat use. Cheap XL beds (under $40) often break down within a season under large dog weight.
No. Standard Large cooling beds rate to 80 to 100 pounds. For dogs over 100 pounds, use only XL or XXL options. The Coolaroo XL, FurHaven XXL, and K&H XL are all rated for 100 to 150 pound dogs. Sit a 150 pound dog on a standard bed and the frame or foam fails within weeks.
Orthopedic cooling beds. The K&H XL combines water cooling with foam for joint support. The FurHaven XXL uses thick memory foam with cooling gel. Both work for senior Newfoundlands, Mastiffs, and Saint Bernards with arthritis.
Most large dogs do not chew their beds once they are out of the puppy stage. Elevated mesh beds like the Coolaroo are the most chew-resistant of the cooling options. Water-fill beds are vulnerable to puncture, so avoid them with strong chewers. Crate train dogs that destroy bedding.
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