Nalgene calls the Oasis “a modern take on the classic camping canteen,” and that is exactly what it is: a flat-sided 32 ounce bottle that sits against a pack, a hip or a seat back instead of rolling around like a round one. Semi-translucent, so you can see what you have left.

It takes the standard 38 mm narrow-mouth cap, which means the loop-top caps off your other narrow-mouth Nalgenes fit it.

Specifications

• Capacity 32 oz
• Mouth narrow mouth
• Cap thread 38 mm
• Diameter across the flat face 4.75 in (121 mm)
• Height 8.375 in
• Weight 4.75 oz (134.75 g)
• Dishwasher safe
• Made in the USA
• Lifetime guarantee
• Material — not published by Nalgene

Two honest gaps. First, Nalgene publishes no material for the Oasis — not Tritan, not Tritan Renew, not HDPE. The words appear nowhere in the title, the spec table or the description. Retailers describe it as Tritan and so do Nalgene staff in replies to customer questions, but that is not a published specification and we are not going to print it as one. Second, Nalgene makes no MOLLE, belt or canteen-cup compatibility claim. People do carry these in canteen pouches, but Nalgene does not state the fit, so check your pouch.

Care

Dishwasher safe. Nalgene recommends the top rack, away from the heating element; if the bottle is too tall for the top rack, the bottom rack is fine on a high-temperature sanitizing cycle.

Hot liquids: Nalgene rates Tritan Renew for hot liquids including boiling water up to 212°F (100°C) in everyday use. You pour boiling water into the bottle; you never boil water in it, and these bottles are not made for direct heat or open flame. Nalgene asks you to wait a few seconds after pouring before screwing the lid down.

Freezing: allowed, but fill only about two-thirds so the contents can expand.

Lifetime guarantee

Nalgene covers functional damage — cracks, breaks, broken components from normal intended use — under a Lifetime Guarantee. It excludes cosmetic damage such as scratches, nicks and worn printing, excludes lost or stolen items, and excludes Epic filtration products, which Nalgene routes to Epic Water Filters. Nalgene also states that claims are subject to review and may be rejected. Claims go through Nalgene with a photo and proof of purchase; they ask for 14 to 21 days.