I ordered my usual size but will need 2 pairs of socks for them to fit right. (This is not a great problem especially in the colder weather.) The shoes are comfortable and light and considering their low price I am very happy with them.
Overall great value for money (bought when it was on offer). Instructions on putting it together were a bit unclear in places. Once up and running you need to be careful how you rewind it as it can easily get tangled/squashed which makes it very difficult to unwind next time you use it.