I have owned this backpack for probably 10 years, so it is difficult to find online. It has only been used a few times as I bought the incorrect size for myself. I don't have a size chart for this particular backpack, but it would probably fit similarly to current Moutain Hardware sizing. This is a fully adjustable full suspension pack. The backplate is an XS. The Hip Belt is a WS (Women's Small) and the pack itself is a S.
This is a great pack if you like comfort, but find it hard to find a pack that fits just right. As it is highly adjustable (which takes an investment to get it right for your body and comfort) it fits right to your shape and style. It also uses the Exodus / Cruiser suspension which makes the weight sit well on your body.
This will fit a small woman or child. I would say up to 5'6 and up to 135 lbs. or lighter.
Here are a couple of reviews
link http://www.backcountry. com/mountain-hardwear-maestro-backpack-4000cu-in
It is a great pack for 3-7 days with weights up to 35 - 40 lbs.
This pack costs $325 new which is what this is but a fraction of the price.
Please contact for any additional info/questions!