Strong and Comfortable : Outer strong memory foam and Inner silicone tube.There is a buckle inside to hold tightly with earbuds. Break Strength is over 15Kg/33lbs. Rebound time is over 60 seconds which is much better than 99% market normal foam.
Enhance Sound Quality : The memory foam tips noise isolation offers superior audio experience enhanced bass and good seal block out external noise.
Packing List : S.M.L size in the packing. One pair for each size. Total 3 pairs.