Loft insulation (Childwall L16)

As in photos.. not sure what it is but it’s like cotton wool ... was originally put in loft by British Gas but too much was brought so they piled it up as they didn’t want to take it away again! We removed a lot and bagged it up so I stored it but now want to get it out of the way... have 3 large plastic bags of it (bags are approximately 60cms across and deep).