You have been helpful as my descripton wasn't very clear! (first time posting in this section, as you could probably guess) I agree I think they are great and thats why I bought them but I wouldn't recommend hiking munros with a 27kg backpack!
£40 Posted - I'm selling a pair of brand new and unused XL Kahtoola Microspikes. I bought them last year in the hope of using them but never had the oppertunity, I have now bought a pair of crampons for more serious walking so have no need for them. XL size is recomended for UK sizes 10 - 13 but If anyone is interested I did try them on my size 14 boots and they did fit.
More info: http://www.kahtoola.com/microspikes.php