Closed cell polyolefin tubing with excellent thermal insulating capabilities. Fire retardant. Will not rot or disintegrate. 5/8" wall thickness. Partially slit, self-sealing, highly flexible and easy-to-apply. Eliminates freeze during the winter, reduces condensation in the summer. Temperature range -90 to 210 F. Use over cold and hot water systems, refrigeration and air conditioning lines and a broad range of other insulating applications. Packed four 3" pieces per package. Tan.