The Siren has been discontinued. If you're looking for something new, check out the best hydration packs for 2020.
Historic Range: $27.93-$40.00
Reviewers Paid: $39.99-$40.00
Not too bad. I'm 6'4" and it fits perfect. The strap was a little tight, but I loosened it to the max and tightened the chest strap, and it fits perfect now.
Only wish it held more water, but I never finish a single bottle most times, so 1.5 L is more than enough for 3-4 hours for me.
Height of Owner: 6'4"
Price Paid: 45 cdn
I just bought my Siren today and took it on a short trail run. At first I found that it tended to bounce a little, but cinching the chest strap as tight as possible helped considerably.
The pro's: light weight, $40.
The con's: 50oz. Although it carries plenty of liquid for an hour or so, I wish it could hold more. But I think I could easily fall in love with this little pack.
Number of Pockets: 1
Max. Load Carried: 1
Height of Owner: 6'2''
Price Paid: $39.99
I am 6'2" and it does not fit too well on my back. The sternum strap almost chokes me. A bit too small for my needs. I ended up buying a MULE as well and only take this on short jaunts.
Price Paid: $40