Winter is upon us and many of us will be getting snow soon if you haven't already.  Having an adequate snowball sling can make you a monster in a snowball fight. 
    Any sling with a big pouch will do.  I've made a few double pouch slings that are perfect for this task.  My very favorite is the Seatbelt Sling. 
    One thing to keep in mind.  Especially if it's a wet snow don't pack your snowball too tightly unless you  want to kill someone.  A fat 100mph slushball can knock someone into next Thursday.

Rat Man, the timing of your question is perfect!  I just had a couple slings delivered today and was going to give a shoutout to the folks at Amdo Craft.  I already have a few slings from them, but I recently ordered some scarves for Christmas presents and figured it would be crazy not to add another sling or two to the order.

Their slings are a great deal, and great for snowballs!  Kick has a video of one in action.  I think he's going to have to link it here so we don't have to go looking through old threads for it. ;)

Here's one of the slings I got today.

http://beehatmead.com/wp-content/uploads/2019/12/AmdoCraftSling-Green.jpg

I would have to pick seatbelt sling

You called? :D

https://www.youtube.com/watch?v=xOTFLp866y0

I love the Amdo Craft slings. I might have to get another one some time even though I already have the two :D They're perfect for snowballs like Joe said but as well as being practical they're also beautiful. I can't say enough good things about them.

Amdo Craft products are great values. 

These Tibetan sling pouches are some pretty hefty things. Mine are pretty thick, I feel like I could put them through some pretty extensive use and the pouch would likely be fine.

I have no experience launching snowballs, I live in the fine wasteland known as Western Australia, and I likely won't get much experience on that front. But I wouldn't be surprised if they work very well with snowballs. I feel that these slings tend to work better with larger slingstones.

ideally you want something waterproof.
Like my 3d printed slings :-)

Curious Aardvark wrote on Dec 17^th, 2019 at 12:12pm:

ideally you want something waterproof. Like my 3d printed slings :-)

Good point.

New or used; seat belt slings are also weather proof  ;)