Do you offer a larger size mask harness for individuals with larger heads?

Yes, we do have a double-sided Velcro extension kit that can be added to your order or sent to you upon request. It is simply two strips of double-sided Velcro that attach to the existing mask harness straps and extend the range of the harness by about 3 inches. In most cases the normal mask harness will fit. The Velcro extensions were the best way to maintain the mask fitment for those who need a little more harness length.