Laminate moister barrier/ pad question.

Hello, So I'm installing some laminate flooring over about 450sqf of concrete. MP Global Best 400 in. x 36 in. x 1/8 in. Acoustical Recycled Fiber Underlayment with Film for Laminate Wood-QW100N1HD - The Home Depot (http://www.homedepot.com/p/MP-Global-Best-400-in-x-36-in-x-1-8-in-Acoustical-Recycled-Fiber-Underlayment-with-Film-for-Laminate-Wood-QW100N1HD/100641165?MERCH=RV-_-rv_search_plp_rr-_-NA-_-100641165-_-N) I bought this pad, thought it would make the flooring a little nicer to walk on. The bag says it can be used over concrete and to make sure that the vapor barrier is faced up. Will the underneath felt part hold moisture itself? That is what I'm worried about.