The sleeves are about elbow length. The body is lined, so it's not see-through, and the sleeves are just one layer, so it's cool. No buttons, no zipper, it's a slip-on type, so it's easy to change clothes, and I bought it for the pool. The point is that you can wear it casually with just one piece. Pattern/Design: Stripe Sleeve Length: 3/4 sleeves Season: Spring, Summer Silhouette: Flare Season: Spring/Summer