The photos below are from a VBTECH meeting on wings, Jim Cobb is the self proclaimed king on this, so we let him give the talk.

This is some off brand he showed us.

You can see that these OMS bungee wings are too tight (as most are) not a single diver there could orally inflate these.
Jim puts this on to show what's wrong. As you can see the inflator hose on the wing is much too long.
This is a dive rite dual bladder superwing. It has too much drag and dual bladder is not needed, too many hoses. Yes I owned a pair at one time.
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These are my classic wings, the old one. Jim shows the liner in his Halcyon.
The New classic wings. They also come in red.
Jim shows how the OMS wings deflate much too fast with the bungee. You need to get the pull dump replaced with the 90 degree ell.