Lock and lock 7 piece nestable set contains 1 x 100ml 1 x 260ml 1 x 520ml 1 x 950ml 1 x 16ltr 1 x 25ltr 1 x 4ltr containers microwave and dishwasher safe nestable effect for easy storage russian doll effect lock amp lock containers are the original 4 locking hinge food storage containers with a 100 air and liquid tight seal their patented lid hinges featuring a unique blocking hole in the hinge cannot be copied although many look alike competitors have tried to emulate them with similar look