Sheets: Split the Sheets' products have insulating polar fleece on one side and cool, breathable cotton on the other. The dual materials also are used in reversible pillowcases. Target's website (www.target.com) has a white king set on sale for $67.99. For a different size or color, or for more information, call (253) 219-7306 or go to www.splitthesheets.com.
Comforter: Select Comfort's Dual Warmth Down Comforter is thick on one side, thin on the other, with stitching that stops down from shifting. The queen size is $229.99, and the king is $249.99. Information: (800) 548-7231, www.selectcomfort.com.