Simple to use, well made in durable plastic, also hygienic. Not too big (i.e. would fit most microwave ovens), and useful as a pack of two - one never enough when heating one bowl and trying to keep the one before it covered and warm! Rings on underside help to stop slippage, and if you're stuck for somewhere to store them, they can be hung from a simple hook on the back of a cupboard door using one of the larger holes on the four spokes.
difficult to find a splash guard for a small microwave so overall I'm pleased with this on basis of value. I cut off the sticky out bits (only needed scizzors) and now it's exactly 25.5cm dia. However I don't find there are enough steam holes and nor are they big enough so I also added a few more and widened just a few. Comes up pretty clean in dishwasher even after tomato based sauces have spattered all over it It's worth noting that the underside gets very condensated so when you remove it from microwave it drips - but I expected this so I'm not rating it down for that.
I bought this model on spec, having searched for microwave splash guards for quite a while. I had melted the previous one (accidentally leaving using it in the microwave when used as an oven!) I've been delighted with it. It's much bigger than my previous one, which was smaller and square. This one easily covers the whole surface of all my dishes and plates which fit within the microwave, and consequently it's much more effective at stopping foods splashing out onto the microwave surfaces.
These are great. Keep glass plate clean in microwave cuts down on all the washing up. I use for porridge and soup. Stops the food spilling over onto the glass. Great. Got one for a friend he's made up with it