Need Weatherstripping

Hi, we have old replacement windows from the 90's Norandex double hung vinyl windows whose weatherstripping is disintegrating. I'm not very knowledgeable about these things but took two photos from the bottom sash swung out. I can see and feel that it slides into a tiny channel. How I would get it started is beyond me because I'm not sure how that window would come out to be able to thread that channel. Anyway I figured I'd better first be able to get the correct weatherstripping so please look at photos and advise. Thank you.
Dick Wolan

Hi and thank you. It's not the wool pile weatherstripping I need but the one that runs along the bottom of the window. It's left of the wool pile in the pictures and gives a good view of the weatherstripping type and channel it threads into. The wool that runs on both sides of the window is fine.
Dick