Totes conveniently stack with or without lids for storage and shipping, and nest when empty. Polypropylene totes will not rust, corrode, or bend out of shape, even when fully loaded. Smooth surfaces are easy to clean. Optional lids protect contents from dust and damage. Clear Label Holders provide quick identification of contents; one size fits all totes (6 per pack). Totes are available in gray, red and blue. Gray totes are manufactured from FDA approved materials.