Dry sack size for sleeping bag

[sivart]

Have a Marmot Helium. Will it fit in a 15L dry sack?

 

[Rfranke]

Assuming that’s a 15 degree helium bag and it’s the current specs on their site it should fit. The compresses size is 7 liters.

 

[mtwarden]

it'll be close; a dry bag usually requires at least two rolls- so it's always tighter than one thinks

a 20 liter will fit for a fraction of an ounce more than a 15