Question 1

What other part I need to purchase together for camping use?

Accepted Answer

You should also purchase a tent, sleeping bag, sleeping pad and maybe a cup. I wouldn’t suggest camping with just this bag. Good luck.

Question 2

Who does this carry the prop 65 warning?

Accepted Answer

The grommets in the four corners are made from brass. All brass contains a very small amount of lead. MSR will soon be switching to a different metal so that the Dromedary reservoirs won't need the Prop 65 warning.  - The MSR CS Team

Question 3

Can I use this to store water long term?

Accepted Answer

If you are talking about long term as in fill it up and set it in the basement somewhere until you need it until a natural disaster hits I would not.  The reason being is that air will still permeate the bladder and eventually lead to microbial growth.  For long term trips where you will be consuming and refilling the water it's fine as the water is being rotated.  That prevents it from going bad or developing a plastic taste.

If you are looking for a real long term storage solution that not a larger plastic drum I use these. 
https://www.amazon.com/WaterBrick-1833-0001-Stackable-Emergency-Container/dp/B00VJQKQDA/ref=sr_1_3?ie=UTF8&qid=1544858081&sr=8-3&keywords=water+brick

I have about 8 of these and they are air tight and hold 3.5 gallons and much sturdier for disaster use.  Also you can use them for solids like food protecting it from rodents if needed.  An added plus is that when I take these camping or hunting I can toss them in the back of a truck or ATV without worrying about them getting punctured or leaking with other gear on top of it.

Whatever you decide make sure you properly treat your water before any long term storage.  Municipal water despite being treated is not sterile and will go bad and develop bio-film in about 3 months.  I use Aquamira to treat all 8 of my water bricks after I fill them up and they are still fine after a year.  I still flush and refill all after a year just to rotate it, but I have one brick that I've left as a test for 5 years now and the water is still good when I check it about ever 6 months.

Question 4

Compared to the msr dromlite, how small does this fold up to?

Accepted Answer

I would say it would fold to approximately 4"x 4"x4" for the largest size bladder.  We generally roll our gear so it rolls to a cylinder shape about 3.5" in diameter x 12" in length.

ASIN	B01MXWBDLV
Best Sellers Rank	#37,211 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #42 in Outdoor Backpack Reservoirs
Brand Name	MSR
Capacity	4 liters
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (420)
Global Trade Identification Number	00040818095867
Included Components	4-Liter Water Bag
Item Dimensions W x H	10"W x 18"H
Item Highlight	Dromedary Bags
Item Type Name	Water Reservoir
Item Weight	6.4 ounces
Manufacturer	Cascade Designs Inc.
Manufacturer Part Number	09586
Material Type	Thermoplastic Polyurethane (TPU)
Model Number	040818095867
Number of Items	1
Number of Packs	1
Pocket Description	Utility Pocket
Sport Type	Camping & Hiking, Outdoor Lifestyle
Strap Type	Basic
Tank Volume	4 liters
UPC	040818095867
Unit Count	1 Count
Warranty Description	3-Year Manufacturer Limited

MSR Dromedary Bag Water Reservoir

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