Deadskin
Registered user
Hi John
Do Ortlieb still make the Hip Pack / bum bag thingie ?
Do Ortlieb still make the Hip Pack / bum bag thingie ?
) but should work a treat.Also ordered are some more jetboil stoves (including the group model version) as well as 2ltr water bags for those who have been asking.

I've used one for years - work and camping - on bike and off... but you can minimise the sag a little I would presume by adding a stiff card or plasti card former into the base of the bag then fill as per normal. I did similar with a north face bag I used to use to make the base a bit more rigid, when it was not full. I used a piece of old house for-sale sign..
The way the rackpacks close, means that a tension is placed across the length and end of the bag. This should help keep the sag to a minimum if the bag is reasonably full, if the bag is very emtpy then it will not do much.
The suggestions of compression strap and bungie would in theory work if i have pictured the issue correctly.
Other options that might be worth a look is say a 10cm wide rigid piece of acrylic or similar durable plastic that you can place under the bag and between the seat which is of suitable length, say at least half the bag length to act as an external support
John
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