Online mattress retailer Casper Sleep has announced plans for the aggressive expansion of its retail footprint over the next three years. The company is plotting the rollout of up to 200 new locations across North America, following the success of its maiden brick-and-mortar location in New York, which opened earlier this year. According to CNBC, the company has been testing pop-ups at shopping malls and street-level retail spaces throughout the country, while also distributing through Target, Nordstrom, and Amazon.