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With their double-skin stainless steel construction, these unbreakable thermos flasks...
Nalgene OTF Cap fits 32 & 48oz Wide Mouth and On The Fly Bottles.
For our adventuring prodigies, there’s the Kids OTF. It features one-handed opening, leak-proof design, durability, and odor resistance.
A slim shape and fortified cap make On-The-Fly ideal for care-free storage in work bags, gym bags, backpacks and cup holders.
These flasks feature thermal insulation, keeping cold drinks cold and hot drinks hot...