Is this real cotton flannel or polyester?

It is 100% cotton flannel, double brushed on both sides. That makes it more breathable than polyester microfiber, but it also means more pilling and lint.

Will it fit a deep mattress?

The fitted sheet is fully elasticized and rated for mattresses up to 16 inches deep. Measure your mattress plus any topper before buying.

How should I wash it to avoid shrinkage?

Machine wash cold on a gentle cycle and tumble dry low or line dry. Hot water and high heat are what cause cotton flannel to shrink and pill.

What comes in the four-piece set?

One flat sheet, one fitted sheet and two pillowcases. The fitted sheet measures 72 by 86 inches.

Is it warm enough for winter?

Yes. Brushed cotton flannel traps warmth well, and owners use it as a cold-weather set. It is heavier and warmer than percale or sateen cotton.

How does it compare with microfiber sheets?

It is softer and more breathable than microfiber and does not cling with static. Microfiber resists wrinkles and pilling better, while cotton flannel needs gentler washing.