CHIMSOC - Balloon For Chimney - (Large Square - 31cm x 31cm (12" x 12"))

Well made, good instructions, does the job. Double layer means more robust.Would definately recommend measuring the chimney space carefully. I took photos with the phone camera using the light and worked out the best shape and size first.

Covered in soot trying to push it up chimney three times had it up and three times it deflated and fell down.