The HEST Top Sheet is designed for best use with the HEST Down Comforter to add extra comfort and convenience. It was created to seamlessly integrate with the Down Comforter featuring tucked corner flaps and toggles. Single Top Sheet: Fits Single Down Comforter Double Top Sheet: Fits Double Down Comforter "The Top Sheet literally ties it all together to make it feel like a complete bed set up for the outdoors! - Alan As comfortable as your home top sheet but in a portable outdoor ready form.The HEST Top Sheet are designed to pack into themselves keeping the sheet neat and clean and when in sleep mode, they seamlessly integrate with the HEST Down Comforter for added comfort and convenience. For a more traditional home top sheet feel, leave top toggles unattached.