1.5L Silo Wide Mouth Sustain Water Bottle

The Nalgene 1.5L Silo Wide Mouth Sustain is a tall, leakproof hiking water bottle that carries 1.5 litres in the same 89 mm width as the 1L Wide Mouth. The Silo stands 28.5 cm tall, weighs 209 g and has a 63 mm cap, with an opening that takes ice cubes and fits most water filtration devices. The bottle is made from BPA and BPS free Tritan Renew.

The Nalgene 1.5L Silo is the Wide Mouth bottle stretched tall. It carries half as much water again as the 1L, in the same 89 mm width, with the same 63 mm cap on top. This Sustain version is made from Tritan Renew, Nalgene's material made from 50% recycled plastic using ISCC certified mass balance.

Who it's for

Anyone whose day needs more than a litre: long hot days on the trail, at the beach or out the back of beyond. It is also the one to pick if you would rather carry one big bottle than two smaller ones.

Capacity and fit

1.5 litres in a bottle 28.5 cm tall and 89 mm across, weighing 209 g. Next to the 1L Wide Mouth that is 7.5 cm more height and 31.75 g more bottle for an extra half litre of water, with no extra width.

• Capacity: 1.5L (Nalgene's 48oz bottle)
• Height: 28.5 cm
• Diameter: 89 mm, the same as the 1L
• Cap: 63 mm
• Weight: 209 g

Drinking and refilling

The big opening makes the Silo easy to fill and easy to clean, and it swallows ice cubes on a hot day or slices of fruit if you like flavour in your water. Most water filtration devices fit the mouth as well. The threads seal leak-proof when the cap is screwed down.

Because the cap is the same 63 mm size as the 1L Wide Mouth, the accessories carry over: 63 mm replacement caps fit, and so does the Wide Mouth Easy Sipper if you want a smaller opening to drink from.

Looking after it

Top rack of the dishwasher, or a hand wash. To freeze it, fill to about two-thirds, which in the Silo is roughly a litre, and leave the rest of the room for the ice to expand. Dry it with the cap off before storing.