[Closed] Which lightweight hydration pack? Kielder 100 and similar enduro nonsense.

Osprey Viper 4. Neat, light, comfy and takes a 3-litre reservoir. Also has a neat little phone pocket on the shoulder strap which handily holds two gels. [for long events you might want one of the larger versions though, but it depends what you're carrying, at Kielder you can drop food in advance for feed stations, so you don't need a lot of carrying capacity]

I've got a camelbak that just holds the bladder is thats what you're interested in? 3 litre bladder, only used a few times, bladder kept in freezer, so very clean, email me if interested!

I try to keep weight off my back on long rides.

Use this for the sort of thing you describe. There are regular stops at Keilder - bottles are easy to refill. Carry one on the bike and another on the belt.

http://www.climbers-shop.com/256113/products/Osprey_Talon_4_Hip_Pack.aspx?utm_source=Froogle&utm_medium=PriceComp&utm_term=Froogle&utm_content=None&utm_campaign=PriceComp1

very pleased with my inov8 pack.

Many thanks fellas - looks like a trip off down the shops then.

Paul