1L bike bottles

[JAlderson]

IME (high desert of Salt Lake City), the insulated bottles provide insignificant effect. I’ve used the camelbak podium insulated bottles in a few different iterations. The best approach I’ve found is to freeze half the bottle worth of water if you can but that means prep well ahead of time. Otherwise, using the biggest ice cubes you can and packing the bottle. I’d take the extra few ounces of water in similar form factor. I’m trying a Polar and a Zefal right now and like them both.