It gets a 4 star due to the strap not clipping in. We use this refrigerator for storing a temperature control medication that needs to be between 2 to 8 degrees Celsius. We bought a thermometer to keep track of the temperature inside and it works great to keep the medication between that temperature needed. We also added some things to keep the medication away from the floor and walls and keep it kind of in the center. The only odd thing about the refrigerator is that the strap does not clip to the part that the instructions tell us to clip it to. It is impossible to clip it because the hole to clip it in is super thin and it only fits the strap not the clip. Other than that, it works great. We have travel with it to pick up the medication and stays consistent. We just make sure we do not turn the car off while transporting the medication, so it does not turn the machine off. Also, make sure that when you have it in the car the refrigerator has a lower power setting. We learned that while we were driving, it was shutting off due to the amount of power it was taking from the car. Once we lowered the bars in the refrigerator it stopped doing it.