sleeping bag season/Tog/ temp

[fishfish]

anyone know how these equate to each other? is a 13.5 Tog duvet equivalent to 4 season etc?

 

[Lister]

anyone know how these equate to each other? is a 13.5 Tog duvet equivalent to 4 season etc?

Hasn't the sleeping bag industry moved away from seasons to the 3 tier (comfort/transition(?)/extreme) way of measuring with a min and max temp range?

Tog is thermal resistance so i don't think you'll be able to work it out too easily. http://en.wikipedia.org/wiki/Tog_(unit)

You could always email The Shirley Institute and ask.

 

[fishfish]

ive found it in the end ,

• Summer: 15ºC to 8ºC / 3 to 5 TOG
• Spring/Autumn: 10ºC to 0ºC / 5 to 8 TOG
• Winter: 3ºC to -10ºC / 7 to 10 TOG
• Mountain: -5ºC to -20ºC / 9 to 12 TOG
• Polar/High mountain: -15ºC to -40ºC / 11 to 16+ TOG

Source: Univ of Leeds