Blocks out up to 95% of sunlight The Coleman Instant Up Northstar Darkroom Tent features the latest in Dark Room technology from Coleman which reduces light, heat and allows you to sleep longer while camping. This technology involves a special coating which blocks out up to 95% of sunlight and keeps the inside of the tent 5 degrees cooler than it would be without it. The Instant Up Hub frame design means a quick setup and takes just 2 minutes. Packing down is a piece of cake too, just stow it in the included heavy duty carry bag for easy storage and transport.