I went to Walmart, and in their fabric section they had several rolls of vinyl of various thickness. The thickest vinyl was maybe $6 a yard, 58 inches wide. So, I bought 2 feet (24X58 inches) for $4. It has been a great buy. It covers the whole hive, so no rain gets through the cracks between the 4 migratory tops. It hangs slightly around the sides and sheds the rain. It has no weight and is easy to remove. It folds back nicely if I want to remove just one top. The longer I use it the more I like it.