Split Top King Sheet Set (Flex) vs Luxury Heavyweight Bamboo 600 Split King Sheet Set

Buy the bamboo set if you sleep hot or want a silk-like feel and your mattress is up to 18 inches deep. Buy the 1800 Series set if you want a wrinkle-resistant microfiber that stays put through nightly head-of-bed adjustments and costs less to try. The bamboo set has the higher rating but far fewer reviews, and owners say its fitted sheet shifts and wrinkles. The microfiber set has thousands of ratings and a fully elasticized edge, but its 1800 thread count is marketing math, not real density.

• Choose the 1800 Series Split Top King set if you want a low-maintenance, wrinkle-resistant sheet that grips a mattress up to 16 inches deep and has a large track record of owner ratings.
• Choose the Luxury Heavyweight Bamboo set if you sleep hot, want a cool silky hand, and your split-top mattress is up to 18 inches deep.