Mattress Topper developed exclusively for the Apple Watch®. MÜNSTER, Germany, Jan. 3, 2023 /PRNewswire/ -- Freezing, shivering, sweating - everyone's nighttime perception of warmth is different. The German Start-up Variowell Development asked 3.300 consumers in 5 countries globally. Over 50% answered that they or their partner often feel too hot often at night - male and female consumers...