The FB35-CV is the Freedom Breeder equivalent of the V-35-S tub. The main difference is our tub comes ventilated to give your snakes proper airflow without having to punch the holes yourself. The tub also features our built in 12oz. deli cup holder to make keeping your snake’s water fresh with ease. These tubs are perfect for ball pythons or other similar sized snakes. We will soon offer this tub in our classic grey color to give your animals more privacy.