- Almost free (though the 24oz of Gatorade costs a few bucks at a gas station)
- You can open and close them with just your teeth and hold them 1-handed while belaying
- If you lose, forget, drop, or don't pack it on a trip, it's not a big deal to get another
- 40g (including tape or cord) vs 187g
That difference of 147g is equal to 2 Snickers and a GU!
2x:
+
1x: 
