I bought a pair in my usual size paid £6 delivery as well grrr and sadly they feel too big :( not huge but loose enough to slip a little on the heel and it needs a pair of dh's socks plus mine to even them out, im usually a 6-7 and bought a 6 thought they would be fine. Soo do they tend to be big made? i cant see a 5 fitting and dont know whether to return and buy a 5, with more delivery costs or just make do and wear lots of socks!