PREMIUM KNIT FABRIC – Boasting three layers of buttery soft fabric and a cozy, plush fill, our three-layer sleep bags are designed with baby’s comfort in mind. That’s why we created them with ultra-soft, breathable fabric with just the right hint of stretch. WARM AND COZY - 1.70 Thermal Overall Grade (TOG) rating ideal for room temperatures between 65 – 75 degrees F GENEROUS SIZE - The 6-12 month size provides a length of 28 inches, width of 14 inches under the armpits and 19 inches at the widest section of the sleep bag. BONUS FEATURES – Our Sleep Bags also feature a comfy, tag-free neck, a wraparound zipper for easy changes and a unique zipper cover to protect baby’s skin.