Sturdy and sanitary, made of FDA-approved, food-grade polyethylene plastic that is durable yet translucent enough so you can see the content level. Handy snap-on top for use with the Little Giant Snap-On Calf Nipple (Item No. 98CN, sold separately). 4.25 inch square by 10 inch high, holds 2 quarts. | Little Giant Calf Bottle