Soft crates: for holidays, not for training
A soft crate packs down to almost nothing, weighs very little, and sets up in a hotel room or a rented cottage in about a minute. That is a genuinely useful product and it is what most people actually need.
The limitation is absolute and worth being blunt about: a soft crate is fabric and mesh. A dog that wants out will get out, either by chewing or simply by leaning. That makes it fine for a dog that is already crate-trained and settles quietly, and completely unsuitable for a puppy mid-training, a dog with separation anxiety, or any dog you would not already trust loose in a room.
Collapsible metal: for the car boot
This is the category worth spending real money on, and the reason is frequency. A crate that goes into a car and comes out again several times a week is being folded and unfolded hundreds of times a year, and cheap folding mechanisms are exactly what fails under that.
What you are paying for is the collapse action — whether it can be done one-handed, whether it stays rigid when set up, and whether the latches survive repetition. Stronger mesh geometry and rounded corners are the other real differences. If your crate lives in the boot permanently and never folds, you do not need any of this and a standard wire crate is fine.
Hard-sided kennels: for cargo, and only really for cargo
Rigid plastic kennels exist because airlines require them for animals traveling as checked baggage or cargo. The construction rules are specific — hard shell, metal hardware rather than plastic clips, ventilation on multiple sides, live-animal labeling — and they are set by the airline, so check yours before buying.
They are also perfectly good car crates for a strong dog, being the most robust option here. They are heavy, bulky and do not fold, which is the trade.
Sizing, which is different for travel
The home-crate rule is that the dog should be able to stand, turn around and lie down — and no bigger, because excess space undermines house training. For travel the same minimum applies, but the reasoning about excess space changes: in a moving vehicle, a crate significantly larger than the dog lets it slide around during braking and cornering.
So for a car crate, snug is actively better. Measure the dog standing — nose to tail base for length, floor to top of head for height — and add a few inches, not a size.
Securing it in the car
- Cargo area, against the back seat. Loaded so it cannot slide forward, which is the direction that matters in a frontal impact.
- Strapped, not just placed. Ratchet straps to the luggage anchor points. Most estates and SUVs have them and most people never use them.
- Nothing stacked on top. A suitcase on a crate becomes a load on the crate roof under braking.
- Ventilation not blocked. Easy to do accidentally when packing round it, and it matters most in exactly the hot conditions where you are least likely to notice.
