My husband purchased one of these eye masks in black in 2010 and loved it. I purchased a blue one more recently for myself. It is comfy and does block light well, but, like other reviewers have shared, the dye transfers onto bedding. I thought it was a difference between the two colors, but reading the other reviews on here, I'd guess that the manufacturer has changed their dye and/or processing. This almost led to a very costly issue. Unsure how well light would be blocked in our hotel room on vacation, I packed my blue mask. I was having trouble getting to sleep and so as not to disturb hubby I moved to the couch in the other room of the hotel suite. When I woke up in the morning there was blue dye all over the hotel pillow case and the couch cushion. Fearing that we'd be charged for replacements for both, we spent a portion of a day trying to find replacement pillow cases and upholstery cleaner. Luckily, with a combination of Resolve and a foamy cleaner with a fabric brush, we were able to get the worst of it out and it was next to unnoticeable. I would not recommend this product to anyone that doesn't have black bedding!