My favorite feature. My cleaning supplies are kept by the wash sink and this holds my scale (I use a hide flipped upside down to weigh in), temp gun, hemostats, poop bags, hand sanitizer, etc. more things I don't want out in the open or little kids playing with. That is why I didn't use bottom storage. I was going to use bottom storage and keep the tubs higher off the ground and away from the typically cooler floor. Also I could get another tub in this way keeping the same height and weight.