With sleeves that hit at just the right spot on the biceps, Madewell’s signature T-shirt nails the not-too-big, not-too-tight thing. Made of pure cotton, this striped crewneck feels broken-in from the jump (and gets even softer with each wash). Style Name: Madewell Allday Crewneck T-Shirt. Style Number: 6088775. Available in stores.