This hive wrap has velcro closures for a snug fit on 8 or 10 frame hives. Made from marine-grade vinyl-coated polyester, it has 1/2" thick R4 rigid Owens-Corning insulating foam board. It helps retain the heat of the bees' cluster, keeping the colony warmer in cold northern temps. Made in the USA. Inside dimensions: 14" wide by 20" long by 17" tall. Covers two 9.5" deeps with room for the telescoping cover. Hive not included.