Needed to size up, arms are short on me even after sizing up to an XL. Online staff are very helpful with sizing exchange. Shipping takes about 10-14 days. Be very careful with the fabric, it snags easily. Also 19 momme is very thin silk which is a gift and a curse. It is very light and breathable and helps in summer or warmer months. It can also be used as an underlayer in the winter. The down side is that the fabric is very delicate and can be easily damaged by a cat's claws or a broken fingernail. The fabric itself is very smooth, soft, and luxurious. I have enjoyed this product but am a little disappointed on how it fits and how delicate and fragile the fabric is.