The benefits of a dome used on a reed is for a better fit along with its self-positioning tendencies.  The real performance comes from a small vortex of air that it forms inside the area between the reed and bottom of the dome.  This vortex of air holds the latex in the special zone once the desired tone has been reached.  When that tone is reached the vortex helps hold the reed position allowing you to hold the note with ease.  This is what makes domed reeds a game changer to many callers. 

Unique to the Wapiti line of reeds are the relief cut-outs which allow all sides of the tape to position themselves comfortably in the roof of the mouth reducing our natural gag tendencies.  In conjunction with the natural soft latex it allows you to produce the most consistent air flow over the latex for sweet sounding tones.