Arc'teryx M20 Backpack - 1220-1343 cu in - 2007 BCS

I have the M40 as well and it is a great alternative if you don't have to carry as much gear. Big enough for in or out of bounds to carry all the essentials.

I really like this backpack. I haven't used it hardcore yet, but it's a great design. I have the regular, and am 5'10''. It seems a bit short; in hindsight I'd get the tall. So maybe it runs a bit small. The pelican color is a great blue. The roll top opening is great; waterproof(ish) and easy to use. The backpack itself is tall and lean; it actually holds a fair amount. There’s one pocket, along the back. I wish it had a small top pocket for shades and stuff, and a way to lash jackets on the back. It just has the two hypalon loops for a board. The detailing and suspension seem to be typical Arc’teryx. It's a small daypack with a full suspension and a thin but good hip belt.

The M20 is NOT a backpack in the traditional sense. Yes, it has straps and a cheesy waist belt, and yes it attaches to your back, but that's where the similarity ends. This contraption will not serve as a backpack. There are buckles for attaching skis or something, but the place for gear is too small to be useful. I can't believe they describe this thing as a backpack. Do not buy this if you want a real backpack.