Ecr4kids - Kids Plastic Large Vented Collapsible Crate Storage W/Open Closed Primary Colors - The ECR4Kids large vented collapsible crate keeps supplies organized and features built-in handles for easy transporting. Made of colorful plastic, the crates lock when open and fold flat to save space when not in use. Crates stack in both the open and closed positions. Nests with other large crates or with two small crates to save space.