Ziploc All Purpose 1/2 Gallon Pleated, 24-Count(0-9/16 in x 6-1/16 in x 3-1/2 ) Unique size & shape. Expandable bottom. Stays upright. Double zipper seal easy to close. Bottom of bag expands to flat base: stands upright; easy storage; easy filling; saves space. Unique, versatile, expandable - bottom bags have so many uses - store it; stack it; pack it; snack it.