Hard-Shell vs. Soft-Sided Cat Carriers in Canada: How to Choose

A hard-shell carrier, flexible soft-sided bag and cat backpack solve different travel needs. Start with the trip you are planning, then check your cat's fit, the carrier's ventilation and the relevant transport rules. A backpack is not automatically a soft-sided airline carrier.

Reviewed October 2, 2026.

Hard-shell carriers for everyday ground travel

A rigid shell can be useful for vet visits and car journeys when you want a structured enclosure. Check the door, fasteners, carrying handle, ventilation and cleaning access. Confirm the product's weight rating and measure the usable interior so your cat can stand, turn and lie comfortably.

For car travel, follow the vehicle and carrier instructions for placement and securing the enclosure. A hard shell alone does not establish crash protection or approval for an aircraft cabin or hold.

Soft-sided bags and backpacks are different designs

A flexible bag may be easier to carry or store, depending on its construction. Check the base support, closure security, ventilation and whether the usable interior changes when the bag is placed under a seat.

A backpack can free your hands on suitable ground trips, but the design needs its own checks. Look at window material, air openings, straps and stability. Keep your cat supervised and watch for signs that the trip is uncomfortable. Neither a bag nor backpack can guarantee a stress-free journey.

Flying in Canada: check the airline before buying

Since June 1, 2025, Air Canada requires a soft, flexible carrier for cabin travel and does not permit backpacks with hard plastic windows. Carrier dimensions vary with aircraft and cabin. See Air Canada's pet policy.

WestJet also requires a soft-sided carrier in the cabin. Check its current size and other requirements directly in WestJet's pet policy. Cabin and checked-pet travel have different rules; a rigid crate must meet the operating airline's specific requirements before it can be considered for checked transport.

For the main cabin requirements and a preparation checklist, read our guide to flying with a cat in Canada. A retailer's “airline-approved” label does not replace confirmation for your exact flight.

Choose by the journey you actually make

• Vet visit or car trip: Compare fit, access, cleaning and how the enclosure can be secured.

• Walking or short ground outings: Compare carrying comfort, ventilation, visibility and your cat's tolerance of the design.

• Cabin flight: Start with the operating airline's carrier rules, aircraft and under-seat space.

• Checked-pet travel: Obtain the airline's specific crate and booking requirements before selecting a product.

Explore MuraPet ground-travel options

For vet visits and other suitable ground journeys, compare the MuraPet White Hard-Shell Carrier and MuraPet Outdoor Travel Bubble Backpack. Check each product's measurements and weight rating against your cat.

These links are ground-travel options, not a promise of cabin or checked-transport approval. Confirm flight requirements before purchasing a carrier for air travel.