This Heatgen thermal pyjama set from M&S is made for cold nights and cosy mornings. A brushed cotton fabric gives it a warm, soft handle, while the long sleeved top and bottom are printed with a Spencer Bear™ ski club design for a playful touch. The round neck and medium warmth rating make it an easy layer to sleep in right through the colder months. This set is designed to keep little ones snug without overheating, and the two piece design makes bedtime dressing simple.