Nalgene Sustain Tritan 32 oz Wide Mouth Water Bottle, 2 Pack, Blue/Gray Review (2026)

Two bottles for two climbers

This listing bundles two 32 ounce Wide Mouth bottles in blue and gray, which is a practical way to outfit a regular climbing partner or a household with more than one person heading to the crag. Rather than buying bottles separately, the pack covers a partnership or a parent and kid in one purchase, and the two colors make it easy to tell whose bottle is whose at a shared cooler or car trunk. Each bottle in the pack is a full-size 32 ounce Wide Mouth, not a smaller travel size, so both climbers get the same capacity as buying the standard bottle individually.

What makes the Sustain line different

The Sustain bottles use Tritan Renew material derived from roughly 50 percent waste plastic through an ISCC certified mass balance process, which is Nalgene's lower-impact take on the same BPA and BPS-free copolyester used in its standard bottles. Beyond the recycled content, the dimensions and construction match the classic Wide Mouth: about 8.25 inches tall, a 3.5 inch diameter, and a 2.5 inch mouth opening that fits ice cubes and most filter threads. Nalgene still manufactures the Sustain line in the USA and gives it the same leak-proof threaded cap and dishwasher-safe rating as its standard bottles.

Durability and everyday use

Because the Sustain bottles share the same Tritan construction as the rest of Nalgene's Wide Mouth lineup, they carry over the same reputation for durability that has made these bottles a crag and trail staple, resisting cracks and dents from drops and rock contact with mostly cosmetic scratching to show for it over years of use. Like every bottle in this guide from Nalgene, they are not insulated, so both bottles in the pack will warm toward air temperature within a couple hours in direct sun, and neither is meant to keep a drink cold through a full hot afternoon. Two full-size bottles do take up more room in a shared pack or cooler than a single bottle, which is worth planning around if space is tight.

How the pack compares with buying single bottles

Compared with the single baby blue or gray and black Wide Mouth bottles in this guide, this two pack is functionally the same bottle, just doubled and made from Sustain's partly recycled material, so the decision mostly comes down to whether you need one bottle or two and whether the recycled content matters to you. Against the insulated Hydro Flask Wide Mouth with Flex Cap also in this guide, both Sustain bottles together still weigh less than a single Hydro Flask, though neither will hold a cold temperature nearly as long during a hot crag day.

The bottom line

Buy this two pack if you climb with a regular partner or are outfitting more than one person, and you would rather buy both bottles from a lower-impact recycled material in one order than shop separately. It earns our score of 8.6 out of 10 for combining Nalgene's proven durability with a more sustainable material at no real performance cost. Skip it if you only need one bottle, since a single Wide Mouth bottle from this guide will do the same job for less, or if you specifically need insulation to keep drinks cold, which none of the Nalgene bottles here provide.

Frequently asked questions