Sleep per or shiver

I'd play it safe and take the warmer bag, i hate being cold, it fecks up your trip big time.

You can rectify "too hot".

Include a little history in your walks. Pecsaetan - Ancient Derbyshire, Staffordshire and South Yorkshire - http://pecsaetan.weebly.com/

How crucial is 145g in the grand scheme of things? (It probably equates to one good swig from your water bottle...)

Against that, are you happy to spend all evening in your heavier bag if that's where your warmth is? Would the clothes be more versatile for sitting/moving around/leaving the tent in the hours before you really want to be in your bag? Or have you already factored in enough clothes to handle evenings and these extras really are extra?

Personally I'd be opting for the lighter bag plus clothes.

Zuma wrote (see)

700g down in that summerbag or is that the total weight of the bag. If its 700g down in a mummy bag it might be more than enough to sleep through a mild frost in the night. My 3 season down sleeping bag has 550g down filling of 700 cuin and is comfortable for mild frost in the night. Say until -3 C

The total weight of the bag is 700g

The spare clothing is, silk top, spare socks, long johns and stuff bag.

Lost sheep,

I don't understand. If you take the warmer bag, what do you plan to wear inside? Your spare clothing sounds like (almost) a minimum to keep your bag clean.

Personally, I can manage at frost level in a 600g sleeping bag (300g of 800 down)  with added clothing but that clothing is a lot warmer than your long johns and shirt. The point is that in those conditions I want something to wear outside my sleeping bag so packing a pair of insulated trousers and an extra layer makes sense.

In Scotland in May I would think the choice of clothing plus bag is more versatile and I'd take the slight weight penalty.

John

I must admit, when I made my post above, I was envisaging something a bit more substantial in the way of spare clothes e.g. a light down jacket or vest....

.... but if it's just baselayers then I'd be considering the warmer bag too.

I quote from www.hikelight.com  `silk adds 9 and half degrees of warmth'.

A silk liner?*

*i'd take warmer bag and a light down jacket.

Addick wrote (see)

I quote from www.hikelight.com  `silk adds 9 and half degrees of warmth'.

A silk liner?*

*i'd take warmer bag and a light down jacket.

Interesting. I wonder where they get that figure from? Can't say I've noticed a huge difference whenever I've used one.

Warmer bag plus down vest* and thermal leggings at the very least.

*Along with whatever insulation I'd be carrying anyway.

Trouble no one about their religion;

respect others in their view and demand that they respect yours.

~Chief Tecumseh~

Addick wrote (see)

I quote from www.hikelight.com  `silk adds 9 and half degrees of warmth'.

A silk liner?*

*i'd take warmer bag and a light down jacket.

"I quote from www.hikelight.com  `silk adds 9 and half degrees of warmth'.

That's just utter b0ll0cks! Even if they are referring to stupid American degrees....

(And I've used a silk liner for years )

Err, no it doesn't, Zuma. Although in part it depends on the person.

For example, my PHD Minim 300 is a standard mummy-shaped bag with a Drishell outer, 300g of 800 fill power down, and weighs 550g in total. PHD rate it to zero and I quite happily use it a few degrees lower than that.