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Heading out for a camping or fishing trip? Grab a SIGG Retro Flask ($30) for your hydration needs. By that we mean libation. Sporting the same design since the early 1900’s, this 20 oz flask features SIGG’s Oval bottle that’s BPA-free and Swiss-engineered from a single piece of aluminum making it virtually unbreakable, a detachable stainless steel cup and a double seal, leak-proof cap.