Cantimplora de Aluminio Cuadrada 1L

The square shape fits perfectly in my backpack's side pocket, and the aluminum keeps water cool for hours even under direct sun. I've already used it on three camping trips and the lightweight build makes it easy to carry all day.

Took this on a weekend hike and the 1L capacity was perfect for a full day out — the aluminum feels surprisingly sturdy but doesn't weigh my pack down at all.

The square shape is what sold me — it doesn't roll around in my pack like my old round bottle did, and it slides into the side pocket flat. Aluminum keeps the water tasting clean, no plastic aftertaste even after sitting in the sun all afternoon.