[This review was collected as part of a promotion.] With several projects around the house, I readily began using the 3M Heavy Duty Duct Tape. I first used it to replace several sections of older black duct tape that was used as part of the installation of an indoor central heating and air system. The previous duct tape had lost its adhesiveness causing the HVAC lines to no longer stay coupled together. I replaced several sections with the 3M Heavy Duty Duct Tape - multi-use duct tape. The tape torn easily both horizontally and vertically. It has been several days and - thus far - the adhesive has been holding the HVAC lines together (which include metal, plastic, and foam) - with the exception of one end that had become loose. This may have been user error, but I thought I was careful. While working in tight areas, the tape is flexible. I must note that the tape can fold in on itself and become stuck together. If it folds together, it tends to stay together and becomes unusable. While this tape is for indoor purposes only, I used it on a vinyl outdoor smoker cover – which is under a covered area – that had become worn. The 3M Heavy Duty Duct Tape has thus far stayed adhered to the vinyl surface. While I would have preferred a less glossy surface on the duct tape, the glossy color is not a hindrance for my current projects. After using, I have noticed that the product appears to be thinner and more stretchy than previous “duct tape” that I have used with a vinyl feeling, glossy outer surface. Compared to previous “duct tapes,” this duct tape appears to be more for indoor maintenance project and does not appear to be “heavy” duty – in my opinion. But again, the product is for indoor use only - which should be on the packaging for brick-and-mortar customers. However, it is mentioned in the online description.