Hydration for a 70.3 I'm looking to buy a new water bottle for my bike and I'm wondering which size I should buy.
I have a quite good deal on those two Profile design :
FC25 or FC35.

Should I get the smallest one and grab a bottle at the every aid station to refill the FC25 or get the bigger one and skip every other aid station.

I'm also planning a 140.6 for 2020 for sure but who knows I might be doing next year.

Other suggestions are welcome.

Thanks!