- International shipping is just USD$9.99 - reasonable
- You have 60 days to send your old one back - generous
- They send the new one immediately, so if you want to time it, you can be never without a shield.
- They send a confirmation email when they've received your old shield, which is reassuring.
Gelaskin, probably because it's so stretchy, like 3M's Command Adhesive.
I also took the opportunity to do some tests on the old one before sending it back - trying to replicate
Update 9 Sep 13
I've received the replacement, and it came with a large self-addressed envelope for you to post the old one back. No postage, though. I'd already posted my old one back so I can't use it. If you want to chance it, you could wait for the replacement to arrive before sending your old one back.