Cool Brewing 5G Keg Cooler Ice Wrap Bundle Parent Black

Will this fit a slim 1/4 barrel keg?

Will these coolers fit a 7.75 gallon keg, with ice blanket and zipped top? If not can you provide link to that size?

Will this work with a standard 5 gallon ball lock soda keg?

Is there any way to buy just the ice sheet? Already bought the cooler and love it but i need a sheet to keep my keg cold while im freezing the other o