Columbia Powder Lite Ii Children's Coat

Hello, according to Columbia's children's size chart, size M (10-12 years old) (approximately 140-147 cm height range) is suitable for 145 cm height and 11 year old measurements. Depending on your child's weight (42 kg) and how you plan to use the item (whether it will be worn with thick clothing or if you want to allow for growth), you might also consider size L (14-16 years); however, size M would be ideal if you prefer a standard, height-based fit.