I can't believe with all these wiper blade posts that no one has mentioned tripledge wipers? They are pure silicone and have a lifetime warranty, I bought mine back in 2004 when as long as you registered your blade purchase online if they ever go bad you get free ones sent to you no charge

Well a couple of years after putting them on the van the plastic tip that locks the blade onto the wiper blade arm came off, I called, they sent me a new one in about 7 working days. Then about 2 months ago my drivers side blade had a piece of the blade missing, it was 20 below that week and the passenger side blade was getting set and not really cleaning the windshield properly, so I called, they sent me 2 new wiper blade assemblies no charge, in about 8 days.
As for how good they work, my 1994 Grand Caravan LE seems to love them

They work great and I bought them at Walmart when they use to carry them back then for like $5.50 a piece, what a deal, going on 7 years and only paid a total of $11.00, they don't squeak, they clean the windshield perfectly, as far as I'm concerned they are the only blade to buy, and they don't require you to send the blade back under warranty.
Now as to the new Tripledge warranty, I just bought some for my sons 2000 Plymouth Neon, during a Christmas sale at our Local Menard's for $1.99 each, special buy item, but the warranty is different, they are lifetime but now you have to pay postage and handling to get the new ones, I believe it's something like $3.00 each or so.
This sure beats the 6 months to once a year blade replacement on what I use to buy, and Tripledge sends you the entire blade with the holder, not just the refill, the complete assembly, a deal of a lifetime, you can buy them online also.