M5 Bottle

I've been carrying this everywhere since it arrived—it's so light I forget it's in my hand, and the 17 oz size fits my daypack's side pocket perfectly. Single wall keeps

Slipped this 17 oz into my tote and barely notice it's there, which is exactly what I wanted for my walk to work. Single wall means my water stays cool enough without any weird metallic taste, and it fits my cup holder too.

Fits perfectly in my bike's bottle cage and the 17 oz size is just right for a short ride. Only gripe is that it sweats a bit with cold drinks since there's no insulation, but that's expected with single wall.