I am making team t-shirts on navy, and royal blue t-shirts. These transfers worked beautifully. After reading the reviews, I was very careful to read the instructions VERY carefully. As long as you follow the instructions, there are no problems. The artwork transferred very well to the t-shirt with no bleed through.
I only had two mishaps: 1, I used the transfer sheet at its orginal size, well the cover paper they give you to use with the transfer is just as large as the transfer paper. The cover paper slipped a little while ironing, and spread a little on the t-shirt, as well as got on my iron. If you are going to use the full size transfer paper I suggest using two sheets of the cover paper overlapping to make sure there is no slippage. I was able to brush off the mistake after it cooled a little, and you really can't tell it was ever there. The second mishap I encountered was that I was putting a small logo on the front of the t-shirt, and inadvertently burned it just a little (its a little dark), since while ironing I never did move off the logo because it was so small. Now when putting on the smaller logo, I make sure my iron completely moves off the transfer periodically, and shorten the ironing time just a bit. A good product, you just need to follow the directions.
Also, I found by transfers at Office Depot for about $4 less than what is advertised on Amazon. I was anxious to try them out so decided to buy them local. Usually Amazon has the lowest prices, but I guess they can't do it all the time.