Terrible warranty, bs customer service. Bought the C4 biom boa last fall on sale. Spring came and less than two months the sole was falling off. Sent them in for warranty (5 weeks it says) which is ridiculous. About 8 weeks later I reached out and they said they can't find them so nothing was accomplished in two months. Then I got the voucher like others said, but found out it was only on their sight and they didn't even give me enough to cover my shoe cost, they said they prorate they warranty based on purchase date. WOW, so less that 2 months golfing and I have to pay to replace the shoe,pathetic. This was my first pair of eccos and will be my last. Don't buy their products or hope you're the lucky one who doesn't have to deal with warranty situation.