The Berkey Tote is a waterproof water filter designed for use with the Berkey Big Gravity Fed Water Filter. Measuring 15" x 10.5" x 15", this gray tote is specifically built to accommodate the larger Berkey model, ensuring a secure fit and easy transport of clean drinking water. Perfect for on-the-go use or in emergency situations where access to fresh water is limited, the Berkey Tote is a reliable and convenient solution for maintaining water purity and availability.