Frelaxy Compression Stuff Sack (Black, L)

What size compression bag would be best for a child size sleeping bag that measures 65” by 25” and weighs less 2.8 pounds?

What would be best size for big anges 0 degree lost dog bag?

What are the dimensions once compressed? I have a 40l bag and I probably need the 45l bag to fit my sleeping bag.

What size do you recommend for 4 days clothes for two people?