This bag is awesome! I'm a research tech and I do lots of lab and field work. I use it as my everyday "purse" and its wonderful. No issues with the zippers or the bag liner. I do have one small problem with it, and it is that there is a lot of excess strap material so it is a one size fits all, but I'm a fairly small person so I have long excess ties kind of hanging around. This is not helpful when running through wild blueberry patches to catch bugs. Other than that its great! No issues with water penetrating in the rain as well. I would buy another one its that good.
We have purchased about 10 of these Mountainsmith TLS Daypacks over the past 5 years. Without exception they have been well constructed, durable and very handy. They are all still in use. Some have been used daily for a couple of years under trying conditions throughout the world. This is the larger size 488 cu in. Highly recommend this pack.
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