Seasonality: Spring, Summer, Autumn, Winter Worn once this year. The jacket is collarless, so it's not too formal ^o^ It has a lining, so it can be used throughout the year. The sleeves are designed to be rolled up. The thread on the jacket pockets hasn't been removed yet. The pants have a side zip. The back pockets are fake. The back is elasticated, so it's comfortable around the waist!