THIS IS A VERY USEFUL DEVICE AND IDEAL FOR SOOTHING MY SKIN CONDITION. THIS IS THE THIRD PAIR ( I buy them in twos) I HAVE PURCHASED OVER THE PAST 2 OR 3 YEARS. THEY EVENTUALLY CRACK/SPLIT AFTER CONSTANT USE AND OF COURSE, IF LIKE ME, YOU DROP IT ON THE FLOOR! A SIMPLE BUT EFFECTIVE DESIGN. THANKS