Nalgene 32oz On-The-Fly (OTF) Wide Mouth Sustain Water Bottle - Slate with Black Cap Colour:Slate with Black Cap The loop cap closure is

The loop cap closure is leak-proof and the eyelet also allows the bottle to be attached to the outside of the backpack

fast-pour screw-cap spout

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Nalgene 32oz On-The-Fly (OTF) Wide Mouth Sustain Water Bottle - Slate with Black Cap Colour:Slate with Black Cap The loop cap closure isThe NEW LOOK of sustainability. All Nalgene bottles are now made with a revolutionary resin powered by new recycling technology that transforms plastic destined for landfills into high performance BPA BPS free bottles. This material is derived from 50 percent waste plastic (using ISCC certified mass balance), further offsetting the use of fossil fuels and lowering greenhouse gas emissions.