I have a deep mattress with a 3 inch topper as well, and most cheaper sheets just slip off. These are deep and even have a little elastic part built in that keeps them on better than normal sheets too. Granted, I don't buy expensive sheets usually, but these are so much nicer than normal sheets I get.

Cute sheet set. Offer a range of colors and designs that are cute and but not over powering (as sheets should be). They are pretty soft and generous in terms of coverage for thicker mattresses. Its nice to be able to get good quality sheets without having to go department stores/BBB.

Perfect fit. My new twin XL mattress is 12" deep and these fit perfect! I'm definitely buying another set.

These are really great quality and a cute pattern. They are thick and sleep kind of warm. They’ll be good for the winter.

Our family purchased the Performance 400 thread count for three different bedrooms (twin, full and king) in three different patterns. They are wonderful sheets with true deep pockets that hold the sheet in place, soft feel with polished cotton appearnace, pretty patterns and wash well. We purchased them on sale for $36 (king), $24 (full) and $18 (twin) which was 40% lower than their normal price (a great deal). These are excellent sheets for a fair price! Don't hestitate to buy them!

These are by far, the BEST sheets. They are silky and soft and at a reasonable price. They are all I have purchased for years.

These are the most comfortable sheets I’ve ever purchased from Target. We bought these on sale so definitely felt like a great value. Cute look too! Would recommend!

Love these! They are very soft and wash well. Will be buying more.

These are great sheets for the price. I have several sets in different sizes. I like the elastic corners, they always stay put. Out of the dryer they are wrinkle free. Just an overall great set of sheets.

More than I had expected. Quality of these sheets are great!