★EXCELLENT AIRTIGHT--These can lids are made of silica gel which is very soft and flexible,allow to fit snugly and grip the rim of the cans giving a good seal. Durable than plastic can covers.
Makes a good seal while fitting different sizes of cans.
I use these lids for my cat food cans when put the unused portion in the fridge. Sometimes I use the bigger cans and sometimes the smaller ones and these lids do a perfect job with both!