Review on IPrimio Bed Furniture Risers Stackable by Robin Evans

I have a huge full bed and a thick metal frame. I love the strength, design, reliability and stackability of these risers. I bought these to raise my bed to add storage underneath. However, they are not that durable after stacking more than 3 if you use them on thick carpet. I tried stacking it 4 risers high and my bed rocked too much for my liking. I lowered it to a stack of 3 and it got a lot better. Again, I suspect it's my carpet. I'm sure it wouldn't rock as much (or not at all) if it was standing on a bare floor. So I think if the design increased the top of the stack by about 2cm it would improve stability on the carpet surface and the increased spacing at the base would allow for a thicker type of carpet.