Pumice - Natural volcanic rock - dead skin calluses
"Stone pumice" is a volcanic rock: frothy lava solidified, created when pressed hot and super super rock is violently ejected from a volcano.
Women's clothing size
With your arms relaxed at your sides, measure around the fullest part of your chest.
Measure around the narrowest part of your natural waist, generally around the belly button. To ensure a comfortable fit, keep one finger between the measuring tape and your body.