Eight Sleep, which sells smart mattress accessories to track sleep patterns and adjust temperatures, raised $50M at a $1.5B valuation, up from $500M in 2021 (Ivan Mehta/TechCrunch)

Ivan Mehta / TechCrunch: Eight Sleep, which sells smart mattress accessories to track sleep patterns and adjust temperatures, raised $50M at a $1.5B valuation, up from $500M in 2021   —  Sleep tech company Eight Sleep today said that it has raised $50 million in a strategic round led by Tether Investments at a valuation of $1.5 billion.