Featuring a double layer construction 1000 mile ultimate tactel multi sport trainer liners are designed to for maximum comfort with a firm promise of no blisters due to the reduction of friction between outer and inner and the ability of the tactelreg inner layer to wick away moisture from the skin keep feet dry a side effect of this layering is that wear on the liners is reduced also for longer useful life venting in the top of the cotton rich outer layer allows moisture to escape sw