Which brand specializes primarily in jeans and casual shirts?

The brand that specializes primarily in jeans and casual shirts is Imogene + Willie. This company is well-known for its focus on high-quality denim and handcrafted jeans that blend traditional techniques with modern aesthetics. The casual shirts offered by Imogene + Willie complement their denim line, creating a cohesive style that emphasizes comfort, durability, and a relaxed lifestyle. Their approach to fashion emphasizes both craftsmanship and a deep appreciation for the heritage of American denim, setting them apart in the market.

In contrast, the other brands mentioned cater to different segments of the fashion industry. Icebreaker is recognized for its use of merino wool and primarily focuses on performance and outdoor apparel rather than casual everyday wear. J. Press specializes in traditional men's tailored clothing and does not primarily focus on jeans, and Isaora is known for high-performance activewear, merging fashion with athletic functionality rather than casual shirts and denim. Therefore, Imogene + Willie stands out as the brand with a clear dedication to jeans and casual shirts.