Introducing the new line of Summit Series. In this limited collection, every product has been designed with the athlete in mind and engineered for performance. Designed as a first layer for alpine endeavors, this is the one piece you'll never take off throughout your expedition. This baselayer top is engineered with minimal seams and delivers targeted comfort for premier performance on alpine missions.

• Designed as a first layer for alpine endeavors
• Engineered fabric and articulated patterning designed specifically for alpine comfort and mobility
• Engineered knit fabric provides zonal warmth and moisture management with minimal seaming
• Only six seams throughout the garment: at the sleeve and collar for added comfort
• Merrow stitch construction provides a more accurate and reliable stitch while eliminating bulk and improving comfort
• Integrated collar and draft flap
• Center back and underarm venting engineered into the garment without seams
• Extra long front zipper for added venting; knit zipper tape for added flexibility and comfort
• Longer back for optimal layering