Guidelines for the storage of handling of breastmilk are different than for formula (artificial baby milk) and other infant foods. (nativemothering.com)
Combined, the extra engineering increases lateral stiffness, and yields a near - perfect 50/50 weight balance, resulting in better handling on the track. (motor1.com)
It also has a built in handle for easier storage and transport. (thankyourbaby.com)