Having tried just about all of the varieties of supermarket sealing fridge bags in an effort to replace some of my aging Ziploc bags, I now give up. None of them are the equal of the Ziploc bags I use for film holders and film. In the UK it seems that Ziploc bags are not readily available, even in Asda (now owned by Walmart). Does anyone know where Ziploc bags might be available in the UK? Cheers, Clive