How to work out the size you will need

Measure babys ‘Wingspan’ going from middle of back to
finger tips, then double it to get your Wingspan Measurement.

 
Mitten_Sleeves_Baby_Sizing_Guide

Note:  If you measure closer to the widest wingspan eg; 65cm
(size 3-6months) or 70cm (6-9months) purchase the next size up!

Size 3-6months | Wingspan 60-65cm
Size 6-9months | Wingspan 65-70cm
Size 9-12months | Wingspan 70-78cm
Size 12-18months | WingSpan 78-86cm
Size 18-24months | WingSpan 86-94cm
Size 2-3years | WingSpan 94-102cm
Size 3-4years | WingSpan 102-110cm
Size 4-5years | WingSpan 110-118cm