The MountainRock Backpack has a simple hip belt and a height-adjustable chest strap. It also has a sturdy bottom, a stiffened back and an integrated tether strap. On this you can secure your dog.
The PeakStone Backpack has a padded hip belt with hip fins and one zippered pocket each. In addition, it has a height-adjustable chest strap, a sturdy bottom and a stiffened back. Also this model has an integrated leash to which you can attach your dog.
On hot days
For both models, if it is very warm outside, it will be warm inside the backpack. Regardless of the material and the windows. So please follow the “rules”, which otherwise also apply on warm days.