Odlo Kids Active Warm Thermal Base layer Set, Blue Wing Stripe, 128 cm ODLO are a Swiss company who have been making thermals for more than 60 years. They are a very popular brand with cross-country skiers. The kids thermals are extremely comfortable with a snugg fit but stretchy, great to wear as a base layer and also popular as warm pyjamas. Soft, fleecy brushed inside Good moisture management Fast-drying Soft flat seams