For the fall and winter we tried the wool version and are unfortunately somewhat disillusioned.
The cuffs keep really warm, but unfortunately are hardly extensible and therefore not so easy sometimes just whoosh to pull on the baby legs, like the cotton version. Our son is now also no giant. He has with Gr. 62 (4 months) started to wear and contributes currently (6 months Gr. 74). Although the cuffs fit, but really pretty tight and even at Gr. 62nd
Our son has still never complained, but the handling aspect they are just not so super.