The Hotel Sheets Direct Bamboo Sheets have more than 18,000 five-star ratings because they’re ultra soft and keep you cozy as you sleep. Made from 100 percent bamboo-derived viscose, the sheets are designed to feel silky yet substantial. Similar to breathable cotton and linen materials, bamboo sheets are also thermoregulating and moisture-wicking, which prevents you from sweating and helps you stay warm in the winter and cool in the summer. Moreover, the sheets are OEKO-TEX standard certified, meaning they’re manufactured without harmful substances. To buy: From $39 with coupon (was from $65); amazon.com. “Although initially cool to the touch, these bamboo sheets somehow manage to regulate to my body temperature very quickly at night, so I’m perfectly comfortable within a minute or two,” one shopper said. “But best of all, no more waking up in a sweat! They are truly cooling when your body needs it.” The sheet set comes with one fitted sheet, one flat sheet, and two pillow cases (one if you purchase the twin size) in sizes ranging from twin to California king. The fitted sheets have deep pockets, and the pillow case has an envelope closure to ensure that it stays on securely. They’re easy to clean, too, with just a simple toss in the washing machine and dryer—and they get softer with each wash cycle. You can choose from 15 colors to match your bedroom decor as well. To buy: From $45 (was from $57); amazon.com. “These sheets are amazing,” one shopper said. “They are truly like sleeping on a cloud, and every time I turn over in bed, I just want to sigh with delight.” They also wrote that their husband is a “very hot sleeper,” adding, “since we started using these he is cool and comfortable every night (while I’m still warm and cozy!).” Along with the cooling properties, shoppers say the sheets are luxuriously soft—one reviewer even said they’re softer and more comfortable than their Egyptian cotton set, while another shopper mentioned that they’re just as smooth after one year of use. Sweat-free nights are just a click away when you shop these customer-loved cooling bamboo bed sheets while they’re on sale before Prime Day. Some colors and sizes even have double discounts, so look for an extra 40 percent off clickable coupon that’s applied at checkout. To buy: From $23 (was from $95); amazon.com.