I use these in and out of the crate very comfy they are great for travel since they are light weight and fit in pet my carrying case. My pets feel at home with this they love to lay on it, it’s warm and comfy for them. This item is well made not to thick just enough cushion for your pet. They have Velcro on the bottom of them so they can go securely in your pet carrier. This are priced very well and have a water resistant bottom.