King size beds give you more room but also require more bedding to cover effectively. For hot sleepers in king beds there are specific sizing considerations that affect how well cooling products work.
The Coverage Problem with King Beds
A standard queen or full size cooling blanket on a king bed will leave gaps on the sides. When you move to one side of the bed the blanket may not provide full coverage, which means uncovered areas at 3am and the associated temperature disruption. For hot sleepers who share a king bed using separate blankets, one for each person, the size issue resolves itself. Each person uses a twin or full size cooling blanket for their half of the bed.
King Size Cooling Blankets
The Stillwell Cloud is available in Queen/King size at 200x230cm or 79x91 inches. This provides generous coverage for one person on a king bed or adequate shared coverage for two people who do not move extensively during sleep. See The Cloud here.
The Scandinavian Approach for King Beds
The most effective approach for a couple in a king bed where one person is a hot sleeper: two separate blankets. The hot sleeper uses a queen/king cooling blanket that covers their half. The cold sleeper uses their preferred blanket for their half. Both people have full coverage and independent temperature control. This is easier to implement on a king bed than on a queen.
King Size Sheets for Hot Sleepers
The same material guidance applies regardless of size. Linen or bamboo viscose sheets in king size. Percale cotton as the budget option. Avoid sateen and microfiber. The size does not change which materials perform best.