Khosla Ventures has led the Comcast-backed smart mattress producer's series B round, increasing its overall funding to $27m.

Eight, the US-based advanced mattress producer backed by mass media group Comcast, has raised $14m in a series B round led by venture capital firm Khosla Ventures.

Y Combinator and Yunqi Partners also participated in the round, which increased the company’s total funding to $27m since it was founded in 2014 as Luna.

Eight has created a smart mattress that tracks data factors such as length of sleep, heart and respiratory rates in order to help users optimise their sleep…