Glad® LockWare™ Medium Containers. 2. BPA-free. Tight seal. Prevents messy leaks! 2 containers & lids. 3 1/2 cups (28 oz) 828ml. The threaded lid and container interlock for maximum security and protection. Glad LockWare containers are engineered for life on the go. Work. School. Potlucks & picnics. Questions Comments Visit our website at www.glad.com. Call (800) 835-4523. ©2011.