Split King 600 Thread Count Cotton Sheets vs Split Top King Sheets 600 Thread Count

Buy the Split King (Adjustable) 600-count set if you have two separate Twin XL mattresses on one adjustable base, since it includes two fitted sheets. Buy the Split Top King set if you have a single king mattress with a head split, like a Sleep Number, because its one fitted sheet has a 32-inch top split and center wings. Both are 600-count long-staple cotton sateen-style sets with 18-inch deep pockets and six corner pockets, and both rate in the mid-4s. Owners of the Split King set call it deep, roomy and well priced but some find it rough and noisy at first; Split Top King owners report a good fit on split Sleep Number beds and a slightly softer reception, though a few call it scratchy.

• Choose the Split King (Adjustable) 600 Thread Count set if your adjustable bed has two separate Twin XL mattresses and you want a fitted sheet on each half.
• Choose the Split Top King 600 Thread Count set if you have one king mattress that splits only at the head and need the 32-inch top split with center wings.