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 a tiny bit of unaddressed 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 Herbology, similar condition.