Thinking of getting a wingnut hyper. The smaller 2.5 should be sufficient for my needs. Will it take a 3ltr camelbak bladder?
Any thoughts of the bag itself?!

Bag is excellent much nicer than a standard pack. I use a source wide pack 2 litre bladder. I find 1.5 litres is about maximum for the bag.

No it won’t. Camelbak bladder is narrow but tall. You will need wide but shallow.

With my 2.5 Wingnut I use a Hydrapak bladder that takes 1.5 litres.

Had a quick Google but can’t find it. Will keep looking!

No luck with the Hydrapak, perhaps they’re not around any more.

Unfortunately, the hydrapak, which fitted really well, is no longer available.

The source one is pretty much your best option now.

The hyper 3 works with a 3.0l bladder. Certainly doesn’t feel like the pack is too big on the trail.

I have tried a few different ones in mine,this as been the best by far.
http://www.wiggle.co.uk/camelbak-antidote-lumbar-reservoir-with-quick-link-30l/

Interesting. Wonder how well that would fit in the wingnut adventure I’ve just bought.

Had the 2.5 and a 2 ltr source filled to 1.5 ltrs fitted

great bags as long as you do not over fill, very comfty when adjusted properly.

It will fit when just about full,so nearly 3L