I have the Body Glove Neoprene Sleeve from WalMart, it does have a bit more room than the B&N Sleeve sold on their website, so it will fit the frame as well.
Does this silicone frame attract dust and pet hair like the one sold on the B&N Site? I want to get one, but was cautioned about the B&N silicone frame by others to were not happy with it...