Overall Size & Safty - Size: 14.2"x11"x19.5" / 36x28x49.5cm (LxWxH) Upper size: 14.2"x10.3"x7.8" / 36x26x20cm Lower size: 14.2"x10.3"x10.3" / 36x26x26cm Fits most small/medium size pets under 14 lbs/6.5kg, built-in safety hook to attach to your pet's collar, prevent pet from escaping.