At Calming Cocoon TM, we prioritize your comfort by offering a range of sizes and measurements. Choosing a size: - Measure the wearer from mid neck height to the ground. E.g If a child is 130cm in height I recommend purchasing 140cm length (SMALL) Calming Cocoon to ensure there is enough fabric to comfortably wrap over their shoulders, feet space while sleeping or if stretching above their head for sensory stimming and regulation. XS 100cm- 139cm, S 140cm-149cm, M 150cm-159cm,XM 160cm-169cm, L 170cm-179cm, XL 180cm+.