Peaceful dreams await in our Blue Marl Sleep Bag. The dual zip opening means you can open from the bottom so there’s no need to disturb little snoozers when its nappy change time. Super-soft cotton rich fabric with accurate tog ratings and an easy two-way zip for speedy night-time nappy changes – our NEW sleep bags will help keep your baby at the right temperature no matter how much they wriggle about. 6-18m is suitable for children 18-25lbs / 8.16–11.34 kg (65-80cm) 18-36m is suitable for children from 25lbs / 11.34 kg upwards (80-95cm)