Nalgene Water Bottle Easy Sipper: Black Fits 48oz & 32oz Wide Mouth Bottles

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The way it sits inside the bottle is kinda meh…otherwise it works alright.;

WOW I LOVE THIS IT MAKES DRINKING OUT OF A NALGENE SOOOOOOOO MUCH EASIER;

ナルゲンのキャップを開けると、この蓋の上に水が溜まってて、確認せずに飲もうとすれば濡れちゃいます。
こればっかりは、どうしようもないですねぇ;

Top five things of note:

[1] THESE STAY CLEANER LONGER -- These are very smooth plastic material rather than the rougher and more porous texture of silicone so there's less "attachment surface" for scunge and growth of things like mildew and algae -- which are very possible / likely when using wide-mouth Nalgenes outside of refrigeration or colder temperatures all-day. (vs. the silicone ones will "grow things" which will require both physical scrubbing AND chemical treatment like a soak in vinegar or hydrogen peroxide to mitigate / remove / kill).

[2] SMALL TAB / RIDGE MAKES EASY AND CLEAN INSTALL FOR USE AND REMOVAL FOR REFILL -- No need to stick your finger or a tool into the openings to remove these -- which can introduce whatever is on your finger / tool at the time into what ought to be your clean drinking supply (yuck!). Simply grab / grip the little flange and place / remove! Could use a Leatherman (tm) or first aid tweezers or forceps if a tool is better option (dexterity in cold weather gloves hands covered with yuck etc.)

[3] PERFECT FIT FOR WIDE-MOUTH NALGENE -- So perfect I wasn't sure whether it would just fall in with use or a bit of pressure! So far so good; clearly I was used to the "it almost fits ... and DANG now it's * in * the Nalgene" experience with silicone in the past. I'm still getting used to it tbh.

[4] TOP SHELF OF DISHWASHER AND IT GETS CLEAN -- Again I think it's the rigidity of this plastic that helps it get cleaner and stay cleaner -- results are very similar to plastic food container lids where you may have some random particulate (errant food particles or crumbs of powdered dish detergent) which either brushes off or you can rinse / towel it off before use.

[5] NO DISHWASHER SOAP RESIDUE / DISCOLORATION -- Another "vs those silicone ones I have" observation where I notice that the silicone tends to accumulate / adhere to the more eco-friendly brands of powdered dishwasher detergent -- a kind of cloudy almost hard-water buildup that doesn't come off readily (or at all). Mostly a cosmetic thing but/and certainly a nice outcome when I'm using these at home vs. on the trail / river.;