Dakine

I think I just make it with my 36 inch waste otherwise I'd run out of strap. Pretty large bag that can fit all I need. My ebike has no mounts so this solves my H2O situation. I use the straps on the bottom exterior for my spare tube which is cool. It was on sale. Super cool. The resevoir doesn�t have the quick release tube or on/off bite valve like the version one can find separately but thats minor. minus 1 star for that but since I got it on sale plus 1 star back. Happy and safe riding!

i use it all the time. not just biking. great hiking pack also.

This pack is exactly what I was looking for. It is snug on your back and it really doesn't feel like its there. 2 things I had to get use to transitioning from a back pack to this are as you drink the water from the pack it becomes looser around your waist. This is an easy fix by pulling the waist strap to make up for the extra space the water was taking up. 2nd is when you hop forward off your seat and straddle the top tube the pack kinda gets stick under the seat as you are standing over your top tube. Not a problem as long as you twist your waist abit before hopping back on the saddle.

I use this pack to carry my water for medium to long rides, as well as any food, additional clothing, tubes, tire irons, tools I need to cover. The water bladder is large, and its weight is distributed over my hips, which is great for balance. The pack is comfortable -- but I haven't used it in really hot weather yet. I tend to pack a lot of stuff -- most people will find the capacity more than adequate. I like the way the bladder seals -- I prefer the fold and slide a clip to the screw-seal that the Camelback Mule uses. I still own a serviceable Camelback Mule, but will favor the Dakine pack.