The Alvi sleeping bag baby Mäxchen Light is very thin, despite 2-layer jersey material. That's what I've been looking for our warm days. I was hesitant at first because of the stretchable Jersey, whether my son will involve more than "fixed" sleeping in it or if the material is not too much on the bed "sticks". But I was taught: just by the flexible material, the entanglement is not as uncomfortable and no trace of "stick" too strong in bed. The sleeping bag is like the different temperatures at night (warm while asleep, against tomorrow cooler) wonderfully made. My son is now 90 cm - with us but there is no slipping or Raus hatching, because compared to other, the upper part is held somewhat scarce, but from the waist by folding a wonderful range is created for the legs. The shoulder is made very wide (again compared to other), so that the shoulders are perfectly protected. Absolutely high quality. I can rate this sleeping bag "perfect" only.