black red Description The Sprint by Mountainsmith has the most comfort and performance you can find in a compact lumbar pack. The Sprint is designed for the seriously demanding runner or fast hiker on a one to two hour outing. Air flow back system promotes cooling and minimizes contact. One 22 oz. bottle carries enough fluid for a summer trail run. Features Elastic rigging on front panel and 4 point compression system on the pocket. Clip on attachment points for gel flasks. Air Flow back suspen