Silentnight Safe Nights Sleep Bag, 0-6 months, 2.5 tog, Star Print. Silentnight Baby Sleeping bag 0-6 months Jersey Printed Stars 0-6 months Do not use if the child is old enough to climb out of a cot - Do not use in combination with other bedding items eg:cot duvet - Guidance to be taking when buying a sleep bag, taking into account the room temperature and the childs sleepwear’ Height: 700 MM Material Content: 100% Cotton Jersery Width: 450 MM 2.5 tog All year around use for standard room temperatures Breathable fabric comfort that stays after 50 washes Safenight products are all tested to against harmful substances.