This is a decent windjammer for the m10. Essential for making recordings outside, and can withstand a fair amount of wind for it's small size. It is however not that small compared to the recorder itself, but it fits snugly on the recorder without the risk of falling of (an improvement over rycotes previous model for the m10). Putting the windscreen on makes the headphone output more difficult to access (still possible though), but I found that only a minor inconvenience, not a problem). It works well for soft to light-moderate wind. Anything stronger and it's better to get a bigger windscreen from rycote and envellop the whole recorder in it. I've used several small windscreens for my sony m10. this is the best one yet.