A: It?s important to get your little one fully relaxed for bedtime so that everyone gets a good night?s sleep. Our breathable sleeping suits and snugly and soft, gentle on your baby?s skin and adaptable to temperature changes throughout the night. Four layers of muslin fabric (a blend of 70% bamboo, 30% cotton) creates a luxurious feel, and the two-way zipper with protective cover ensures your baby won?t graze their skin on the zipper during sleep. To help parents understand which TOG values are right for different room temperatures see the guideline below: 0.23 TOG (for 4-layer muslin) ideal for high summer with room temperatures above 26C B: It?s important to get your little one fully relaxed for bedtime so that everyone gets a good night?s sleep. Our breathable sleeping suits and snugly and soft, gentle on your baby?s skin and adaptable to temperature changes throughout the night. Four layers of muslin fabric (a blend of 70% bamboo, 30% cotton) creates a luxurious feel, and the two-way zipper with protective cover ensures your baby won?t graze their skin on the zipper during sleep. To help parents understand which TOG values are right for different room temperatures see the guideline below: 0.6 TOG (for 4-layer muslin) ideal for high summer with room temperatures between 24 C and 27 C