Loulou Lollipop Muslin Lightweight Sleep Bag 0.5 TOG - Dancing DragonfliesLightweight Sleep Comfort for Warm Nights Lightweight enough to prevent overheating, secure enough to replace loose blankets the Loulou Lollipop 0. 5 TOG Muslin Sleep Bag in Dancing Dragonflies keeps baby safe and cool on warm nights. Key Features Breathable viscose from bamboo and cotton muslin helps regulate temperature on warm nights. 0. 5 TOG weight is best suited for room temperatures of 2427C, as stated on the official product page. 2 way zipper