Water bladders with pipes are very popular these days but
1. They are expensive
2. Prone to puncture and leaks
How about a standard Sigg bottle top modified so that a drinking pipe is stuck through it and welded so that its leak proof. Sigg bottles are very popular so alot of people would only have to buy the modified top - which would be cheaper than a complete bladder and more robust.
I sent this idea to SIGG around 8 Feb 2005 but never heard back.
1. They are expensive
2. Prone to puncture and leaks
How about a standard Sigg bottle top modified so that a drinking pipe is stuck through it and welded so that its leak proof. Sigg bottles are very popular so alot of people would only have to buy the modified top - which would be cheaper than a complete bladder and more robust.
I sent this idea to SIGG around 8 Feb 2005 but never heard back.