(TrendHunter.com) The body naturally cools down during sleep and Casper's Hyperlite Sheets help to maintain a sense of cool comfort with an innovative design. The sheets, made with 100% TENCEL Lyocell, feature... (TrendHunter.com) The body naturally cools down during sleep and Casper's Hyperlite Sheets help to maintain a sense of cool comfort with an innovative design. The sheets, made with 100% TENCEL Lyocell, feature...