Hemp/Organic Cotton Insert consists of 5 layers of hemp/Certified Organic cotton topped with a soft layer of hemp/Certified Organic cotton fleece. This insert is so trim you will be able to have your baby wear jeans again! Please note that hemp inserts will shrink slightly during first washings making them consistent with the other insert sizing. Small - Birth-14 lbs - Green Stitch - 11.00" long Medium - 11-22lbs - White Stitch - 12.75" long Large - 16-35lbs - Blue Stitch - 13.75" long Question: Do I need every size insert? Not necessary! Just because there are three options doesn’t mean every baby will wear each one for the same amount of time. Some families like all 3, some might decide to skip the medium and go straight to large after they outgrow smalls (this is especially true for larger babies). Or maybe you’re starting your cloth diaper journey a few months in so you start with medium rather than small. This is the great part about having the size options!