Every year your little adventurers get a little bit braver – and a little bit bigger too! But they can keep the same sleeping bag, because our GROW UP STAR grows with them. A zip in the foot section allows you to extend the length of the bag.Simply pull out the extension to accommodate the latest growth spurt! This lightweight sleeping bag features our proven MICROGUARD synthetic fibre insulation, which is cosy and warm, easy-care and immune to moisture.This means the sleeping bag retains its insulation performance even when damp. It dries quickly too, so if it does get wet, it will be dry again the next day. A double layer of insulation in the foot box keeps sensitive little feet warm and cosy.