I am constantly working on ideas to eliminate health problems for pumpers.
Blisters, donuts, edema,  caused by too high pressure or long periods of pumping, seem to be history. Still pumping with higher then 8hg also with helmet might cause blisters!
This innovative integral helmet, solves most of these problems.
Made from sikn friendly gray soft silicone.
Since every item is made by hand on order, please alow production time 3-5 days.
Conical cylinder might require a smaller helmet.
for example: a conical 2"cylinder, the 1.75" helmet gets stuck in the upper part.