Lock-Ups Storage Containers 5 per package. 1.5 Ounces. These stackable storage containers provide handy storage solutions for a variety of uses. Twist-lock lids offer fast secure storage. Available in a variety of convenient sizes these go everywhere containers are ideal for home office school workshop travel and on the go! Top shelf /air dry dishwasher safe. Lock-ups are designed for busy lifestyles. Not suitable for use in the Microwave.