Not sure which crate or carrier size fits your dog? The pet carrier fit finder takes your dog’s weight and points you at the right type and the picks below.
How many go-bags do you need? One per dog. Ready.gov’s pet guidance calls for a “Traveling bag, crate or sturdy carrier, ideally one for each pet”, and the supplies inside multiply the same way: two dogs means two full go-bags, not one stretched across both. For per-animal food, water and carrier math across a household, see our multi-pet emergency planning hub.
What Goes in the Bag, and What the Authorities Say
Ready.gov’s two-kit approach means the go-bag is not meant to replace your dog’s full supply at home, only to move with you fast. How big the home reserve should be is a question four authorities answer four different ways, reconciled in our duration standard table.
ASPCA’s Evac-Pack guidance fills in the contents: 7-10 days of food, at least 7 days of bottled water, a first-aid kit, waterproof medical records with a 2-week medicine supply, a recent photo, and a sturdy traveling bag, crate or carrier for each pet.
Want this list on paper? Get the free printable go-bag checklist.
AVMA’s 2023 Save the Whole Family brochure narrows the carrier question to something usable. It says dog kennels or collapsible cages should be large enough to hold two no-spill bowls and still allow your dog room to stand up and lie down comfortably, and to familiarize animals with cages and carriers by taking them out several times a year and putting toys, blankets and treats inside. The American Red Cross makes a similar point, advising evacuation drills so pets get used to their carriers, and adds a blunt framing worth repeating: if it isn’t safe for people to stay, it isn’t safe to leave pets behind. Per AVMA’s FAQ, the PETS Act (2006) amended the Stafford Act to ensure that state and local emergency preparedness operational plans address the needs of individuals with household pets and service animals following a major disaster or emergency.
None of those sources tells you which product to buy. That is where size and carry method take over, because a go-bag built for a 12-lb terrier and one built for a 75-lb shepherd solve different logistics problems.
Size Tiers: Matching Gear to Small, Medium and Large Dogs
Small dogs (roughly under 20 lbs). A small dog can usually be carried in a soft-sided carrier or a pre-assembled small-dog kit. The Frontline Coalition’s Pet Evac Small Dog Pak is built for dogs up to 16 lbs, with a 17x12x10in carrier that converts between backpack and duffel carry. Sherpa’s Original Deluxe Medium covers up to 16 lbs and the Large up to 22 lbs, per Sherpa’s size chart, which also caps the Medium at a 16in-long, 9.5in-tall dog. It is a good budget option if you do not need the full pre-packed kit.
Medium dogs (roughly 20-50 lbs). This is where dog-worn packs start to make sense. Ruffwear’s Approach sizes by chest girth (Small 22-27in, Medium 27-32in), so a healthy, acclimated medium dog can carry some of its own supplies. Diggs’ Evolv Medium tier (30-50 lbs) is sized for this range too, useful if you are crating rather than carrying.
Large dogs (roughly 50-90+ lbs). A large dog may be able to wear its own pack (Ruffwear’s L/XL covers 32-42in chest girth) if it is healthy and can walk the distance. If it cannot, because of injury, age, heat stress or panic, the K9 Sport Sack Kolossus is built to let a person carry a 40+ lb dog hands-free, sized by the dog’s collar-to-tail length rather than weight alone. Diggs’ Evolv Large tier (70-90 lbs) is the premium crate option, though at 48 lb empty the crate itself becomes a second thing to carry. The budget crate is the MidWest 42in iCrate, whose listing title states a 71-90 lb large-breed range. It is a wire crate, which Center for Pet Safety’s testing treats as distraction prevention rather than crash protection (see the crash-test section below).
Dog-Worn Pack, Human-Carried Carrier or Crate
The honest answer depends on your dog’s health and the distance involved, not a universal rule.
A dog-worn pack makes sense when your dog is a healthy adult, medium-to-large, can walk the evacuation distance, and has been acclimated to wearing the pack. Ruffwear recommends that a dog carry no more than 25% of its body weight, including the pack and contents. That is a manufacturer recommendation, not a veterinary one, and Ruffwear’s page does not address puppies, seniors or dogs with joint or spine problems. Our own caution: ask your veterinarian before loading a dog in one of those groups.
A human-carried carrier or backpack makes sense when your dog is small enough to carry comfortably, cannot walk the distance, or is injured, elderly or too panicked to move safely on a leash. For small dogs that is a soft carrier like Sherpa’s. For large dogs that cannot walk out, it is a human-worn backpack carrier like the K9 Sport Sack Kolossus, built with an internal frame and hip belt because carrying a large dog any real distance is physically demanding no matter how good the pack is.
A crate makes sense when you are managing multiple pets, need a dog to stand and lie down comfortably during a longer wait (shelter intake, vet triage, a car ride), or your dog is not a good candidate for a soft carrier’s confinement. Diggs’ Evolv line has five tiers with manufacturer height guidance and exterior dimensions, so you can match the crate to your dog’s measurements instead of guessing at “medium.”
Spec Comparison: Dog Go-Bag and Carrier Options
| Product |
Best For |
Size Range |
Weight (product) |
Carry Method |
| Ruffwear Approach |
Medium-large, healthy dogs |
17-42in chest girth (4 sizes) |
0.73-1.3 lb |
Dog-worn |
| Diggs Evolv Crate |
Multi-pet households |
Small up to 30 lb through Extra Large 90-110 lb (5 sizes) |
24-53 lb (crate) |
Not collapsible; staged crate |
| Mirapet Collapsible Crate (Medium) |
Tight storage, budget-conscious households |
Fits crate open dims 26in L x 15.3in W x 18.8in H |
13 lb (crate) |
Collapsible, folds to 5.5in tall |
| MidWest iCrate 42in (Double Door) |
Large dogs on a budget |
71-90 lbs dog (listing title) |
37 lbs (crate) |
Folding wire crate, human-carried |
| K9 Sport Sack Kolossus |
Large dogs that can’t walk out |
40+ lbs, 20-29in collar-to-tail; 60 lb max on the Large |
4.5 lbs (Large) |
Human-worn backpack |
| Frontline Coalition Small Dog Pak |
Small dogs, complete kit |
Up to 16 lbs |
3.25 lbs (carrier) |
Backpack or duffel |
| Sherpa Original Deluxe |
Small-medium dogs, budget |
Up to 22 lbs (Large size) |
3 lbs (Medium) |
Human-carried |
The Crash-Test Gap: What “Airline Approved” Does Not Mean
This category has no established independent safety baseline. Center for Pet Safety (CPS), the nonprofit that crash-tests it and runs the CPS Certified program, says most pet products “remain untested, unregulated, and potentially unsafe” and describes the industry it was founded to challenge as “an unregulated industry where safety claims go unchecked.” CPS also notes that industry groups are developing new standards alongside manufacturers, retailers and testing labs, and argues that arrangement carries inherent conflicts of interest. So the absence of a safety claim tells you little, and the presence of one tells you less.
The label “airline approved”, a claim Sherpa and other carrier brands make, refers to a carrier fitting under an airplane seat, not to any crash-test result. As of September 29, 2026, none of the products in this guide appeared on either page of CPS’s list of CPS Certified products. If crash protection during vehicle transport matters to your plan, start from that list rather than from any manufacturer’s own safety language.
For wire crates, there is more to say than “no standard exists,” because CPS has tested this category. Its 2015 crate crashworthiness study, conducted with Subaru, included a Midwest-brand wire kennel in two configurations, and both failed. One “slid forward directly into the seatback fixture” and was “severely deformed on impact.” The version secured with a reinforced cage support system stayed in the cargo area, but the test dog hit the back of the crate, causing the crate to fail, and struck the seatback. CPS concluded that wire crates “should be considered as distraction prevention tools and will not provide significant protection in the case of an accident”, even with reinforced strength-rated support systems.
Our budget large-dog pick, the MidWest iCrate, is that brand and category. CPS tested a Midwest wire kennel, not necessarily the exact 42in double-door SKU we link. Our reading is that the failure mode it describes, frame deformation and the dog striking the crate wall, comes with wire-frame construction rather than one SKU. A wire crate is for containment, staging and shelter intake, not for protecting a dog in a vehicle collision.
Acclimation: The First Time Cannot Be Emergency Day
AVMA and the Red Cross both say to get pets used to their carriers before you need them. AVMA suggests taking the carrier out several times a year with toys, blankets and treats inside, and the Red Cross suggests evacuation drills. A dog that has never worn the Approach pack, never been zipped into the Sherpa carrier, or never spent time in the Evolv crate will likely resist all three when you have the least time to work through it.
A simple drill: let your dog sniff and explore the gear with treats for a few days, then do short wearing or confinement sessions at home, then a practice walk or car ride in it. Do this well before hurricane season, wildfire season or whatever your regional risk window is, not the week a storm is named.
Heat and Distress: When to Stop and Call the Vet
Cornell’s veterinary college lists exercise in hot, humid weather among the situations that cause heatstroke. A dog exerting itself or confined in unfamiliar gear during an evacuation is in a similar position (our extension, not Cornell’s). Cornell lists these signs: heavy panting, drooling, bloody diarrhea, vomiting, weakness, confusion, seizures or collapse. Cornell says heatstroke is a medical emergency requiring intensive critical care, and that owners should begin cooling the dog while already on the way to the vet, not instead of going.
If you see any of those signs during an evacuation, stop trying to manage it yourself and get to an emergency vet now. If you suspect your dog has ingested something toxic while evacuating (spilled chemicals, unfamiliar plants, a neighbor’s yard), ASPCA’s Animal Poison Control Center is reachable 24 hours a day, 365 days a year at (888) 426-4435. A consultation fee may apply.
Two or More Dogs: Two Bags, Sized Separately
Do not buy the same product in multiple sizes just for consistency. A 15-lb terrier and a 65-lb retriever need different gear: the terrier is a Sherpa or Frontline Coalition candidate, the retriever an Approach-pack or Kolossus candidate. Matching gear usually means the smaller dog over-carries or the larger dog’s crate does not fit.
Two dogs get two go-bags. Beyond Ready.gov’s “ideally one for each pet” and the per-animal supplies, one shared bag is a single point of failure: if it is dropped, soaked or left behind, both dogs lose everything. What changes with a second dog is the carry math and how you pair gear. The best two-dog setup is rarely two of the same thing; it is two correctly sized things.
The combined carry weight. Two loaded bags plus two leashed dogs, or two bags plus a dog that must be carried, is a different problem from one bag, and none of the federal or veterinary authorities cited here publishes a carry-weight standard for it. Our multi-pet go-bag math piece covers the weight-of-bag reality check and the per-animal supply numbers, including a worked two-dog household example. If either dog needs to be carried rather than walked, one person is rarely enough. The Kolossus moves a single 40+ lb dog hands-free and is still physically demanding over any real distance, and an Evolv Large crate at 48 lb empty is a second heavy object. Split the load across every adult available, and decide in advance who carries which dog and which bag.
Bundling existing picks for two dogs:
| Your two dogs |
Bundle from existing picks |
Why this pairing |
| Two small dogs (each roughly under 22 lbs) |
Two Sherpa Original Deluxe carriers, or two Frontline Coalition Small Dog Paks |
Each dog gets its own published-weight-ceiling carrier or complete kit, with nothing shared |
| One small dog + one large dog |
Sherpa or Frontline Coalition for the small dog, plus the Ruffwear Approach (if the large dog can walk out) or the K9 Sport Sack Kolossus (if it can’t) |
Matches each dog’s size and mobility instead of averaging two very different animals |
| Two medium-to-large dogs that can both walk |
Two Ruffwear Approach packs |
Keeps both your hands free for two leashes, within Ruffwear’s recommended 25% of body weight, applied to each dog separately |
| Two large dogs, at least one that can’t walk out |
One K9 Sport Sack Kolossus plus one Ruffwear Approach, or two staged crates (Evolv or MidWest iCrate) loaded at the vehicle |
The hardest carry in this guide; plan a two-adult or vehicle-first evacuation, and treat wire crates as containment, not crash protection |
Carrier counts, staging, and how two dogs’ carriers fit into one vehicle are logistics questions covered in our multi-pet emergency planning hub and car loading carriers for multiple pets.
What the Published Specs Do Not Tell You
- Kolossus maximums. The K9 Sport Sack Kolossus lists a 60 lb maximum weight recommendation on its Amazon listing for the Large but no equivalent for X-Large or XX-Large, so that number should not be extended to sizes it was not published for. The brand’s own page no longer lists the internal aluminum frame, padded back panel and padded waist belt that its Amazon listing advertises, so those specs are cited to Amazon.
- Frontline Coalition listing. The Small Dog Pak has no Amazon listing under that company’s name, so the pick links to the manufacturer directly.
- MidWest iCrate folded size. MidWest advertises that the crate folds flat in seconds but publishes no folded dimension, so you cannot check it against a closet or trunk in advance.
- Diggs storage space. Diggs lists Evolv collapsed dimensions as N/A: it does not fold. Reserve the full exterior dimensions of the size you buy rather than planning a flat-storage slot.
- Sherpa collapsed size. Sherpa publishes no folded dimensions for the Original Deluxe.
Buying This Gear: What to Check Before You Click Buy
Prices and stock move, so check the current listing before you buy. We do not display exact prices: Amazon’s Operating Agreement bars static price display, so we use budget, mid and premium tiers.
The linked Ruffwear listing is the X-Small. Other sizes are separate listings, so order the size that matches your dog’s chest girth, not just the first result.
Still not sure which pick fits your dog? For most small-to-medium dogs, our own suggestion is to start with the Sherpa: it is the lowest-priced small-dog pick here, and you can size up to a dog-worn pack or human-carried backpack once you know your dog’s weight class. For a large dog where budget is the binding constraint, the MidWest iCrate covers a published 71-90 lb range at the budget end of this roundup, where the Evolv is the premium pick, as long as you treat it as containment and staging gear rather than crash protection.
For the broader evacuation-kit picture, see our pet evacuation kits pillar guide and the DIY pet go-bag checklist for a full packing list with per-animal quantities. If you would rather buy a pre-made kit, our best pre-made pet emergency kits roundup compares four. If you are triaging which pet goes first in a fast-moving evacuation, which pet to evacuate first walks through that decision. Multi-dog and multi-pet households should also read multi-pet go-bag math and car loading carriers for multiple pets for how individual go-bags fit into a whole-household plan.