Roughly triangular ish pond ..great for placing at the bottom of a water feature, cascade, waterfall etc . Fiberglass and coloured black inside. Has some scratches from cleaning but these all but disappear when wet and especially when full. Dimensions are roughly ( because of odd shape) .. 1500mm across the front 1100mm across the wider side 400mm across the narrow side 850mm from back corner to front 400mm give or take in depth Has overflow hole in top edge area . (Made like that. I didn't just put a hole in it Does not leak.