Both of these items have hardly been worn. The green one is size 120, but the waist is quite small, so it might be just right or a little tight for a 100cm child. It has elastic, so it will stretch, but if you are concerned, you can try adjusting the elastic. Thank you. ------------------------------------------------- ⭐️ No smokers or pets in the household. ⚠️ Some items are also listed on other sites, so items you are considering may be removed. Please understand.