These items can NOT be exchanged. Order windows for all XC items will close on August 15th!! The jackets run BIGGER rather than true to size - we find that most of the time, kids size down. There are absolutely no exchanges or returns on this item. Sizing: https://www.sanmar.com/p/6917_Navy/specSheetMeasurements Poly blend Clothing items do not shrink Please come down to the shop to try on sizes if you are unsure! We accept exchanges on items that have not been washed or worn. YS - fits like a 5/6 YM - fits like an 8/10 YL - fits like a 12/14 Adult Sizing: Adult Small (AS) is similar to YXL fitting for PE