Olsenmark Water Pump is made of high-quality ABS plastic shell, food-grade silicone tube. No BPA, no toxic, and no smell, much safer to drink than using the traditional water dispenser. This drinking water pump with 2xD size Dry Cell Batteries give you 100% automatic use and hassle-free installment, so the gallon water pump can be used in the camping and travel. With its mini size, low noise, suitable for use in camping, travel, home, and office.