Moorland Gold grow-bags are made from moorland peat, river s&, a very small quantity of perlite & vermiculite & an organic fertiliser which is made from organic cocoa shells & organic coconut husks to ensure a good, strong crop. 2 bags containing 30 litres of compost, they have good volume for root systems to develop & retain moisture well. We've tested them in our own gardens & have found plants require less extra feeding as the bags are so well stocked with nutrients! Width 36cm x Length 73cm.