originally, wilderness travelers purchased nalgene products from laboratory-equipment suppliers, or perhaps gained access to them in their workplaces. company lore has it that nalge company president marsh hyman discovered that his son's boy scout troop was using nalgene laboratory containers when camping. since then, the company has re-packaged and marketed items for consumer sales through their line of nalgene outdoor products. by the late 1990s, the "nalgene" trademark was recognized by many hikers, and sales of the 1-litre wide-mouth bottle of translucent polycarbonate (originally typically grey, but now commonly in bright colors, often with custom labels made for the bottle retailer) with a screw-on plastic top that stays attached when the bottle is open, began to increase. today, many hikers and others recognize the distinctive appearance of nalgene-branded bottles. its laboratory pedigree is still suggested by the markings, in hundreds of millilitres, of the volume contained. the materials resist stains and odors absorption, and can be filled with boiling water. the wide-mouth bottle is more widely used and sold over the narrow-mouth bottles in sub-freezing conditions, since it is easier to break through ice in the wider mouth. currently, nalgene markets over ten different kinds of bottles, including the classic wide mouth and narrow mouth.