I looked all over the web and at local shops for an SMB with a over-pressure valve. Everything I saw seemed to lack the valve, be way overpriced, or really short. This one is a great length and, though it may be a bit thinner than some others, I think that it makes up for any decrease in visibility that the thinness causes with the addition of two styles of reflective tape at the top. The size of the inflated tube also makes it a little easier to hold onto than some of the thicker ones. How the tape holds up remains to be seen, but for now it looks great. It can be inflated through the bottom end of the tube with the octo (or exhaust from the secondary reg), or manually by giving it less than two full breaths. I haven't tried filling it straight from the low-pressure hose, though the mouth-inflator looks a bit different than those that can be filled from the hose. I don't like the idea of taking my hose off anyway. Some have commented on the fact that the SMB is held together in its rolled-form by an elastic band (like a hair tie) instead of a nylon/Velcro strap. While I would have also preferred a Velcro strap over an elastic band, the band is thicker than hair ties, seems fairly sturdy, and holds the rolled SMB together well. I imagine that sun would degrade the elastic, but probably not any faster than it would bleach the tube. Don't leave your gear in the sun. All in all, this is a great SMB, that can be deployed from depth, for a great price.