This is the 1.0 TOG sleep bag, perfect for indoor temps 69-73 degrees to keep baby warm at night and naps. Size medium fits 18-30lbs and 26-33” height. Sleep bag is in good condition. Outer layer has some pilling, inner layer has popped threads which have left behind some first layer holes, but holes have not affected function. See my other listing of a second sleep bag in original Icon, similar condition.