Our cotton bed sheet sets have two sizes. For Queen and King sizes, the dimensions of fitted sheets correspond to the mattress size, making it easy to select the perfect fit for your bamboo sheets queen or king bed. For example, a king mattress and fitted sheet are approximately 76" x 80" (193 x 203 cm). Flat sheets are slightly larger to drape over the sides, with king flat sheets typically measuring around 108"x 104"(275 x 264 cm).