Old Navy O.G. Straight Built-In Warm Dark-Wash Jean Overalls Wear these Old Navy O.G. Straight Built-In Warm Dark-Wash Jean Overalls ($33) over sweaters or turtlenecks when temperatures fall. They're warm on the inside and cool on the outside. Image Source: oldnavy.gap.com Old Navy O.G. Straight Built-In Warm Dark-Wash Jean Overalls $33 from oldnavy.gap.com Buy Now