Unfortunately, the manufacturer only states the weight in the packaging, which is just under 2 kg, so it can be assumed that the product itself weighs a little less.

I've just measured, it's 95 cm.

Yes, you can fold it up, but this means the holder that goes under the mattress, the length of 90cm remains.

Yes, absolutely.

The dimensions are as follows: 90 x 45 x 45 cm (L x W x H)