EAC / Airtight container

Owing to worldwide population aging, the number of the case that an old person lives alone or just old couples live together is on increase.
When the olds use food containers, they have difficulty opening and closing the containers because they are losing their power to grab something.
By designing the container's cap handle long out of the existing container's short cap handle, the old people can easily open and close the container through the effect of the lever.