These are a fantastic hoodie from Just shear which i am lucky enough to sell,
so warm and comfy, if you're unsure about sizing please measure your favourite hoodie and go from there, a size chart is in the photo's.
With the thickest fabric you won't need to wear too many layers underneath. Standard sizing with long arms so no need to wear a Large just for arm length if you are a small. The tail on them for some is a bit out there - till you wear it, on a cold day your back and bum is covered - no crack - no cold air.