Try a natural alternative to synthetics on your next run or workout. Designed for sports and fitness enthusiasts, the Aero 1/2 Zip introduces Icebreaker's GT 120 merino fabric, its lightest ever!

This product will be shipped directly from Icebreaker and will leave their warehouse in 2-3 business days. Eligible for UPS ground shipping only.

• Featherweight GT 120 fabric: Merino wool with nylon for durability
• Lighter and cooler for warm-to-hot conditions
• Regular fit; best for running and fitness
• Merino wool regulates body temperature to keep you warm when it’s cool and cool when it’s warm
• Highly breathable merino transports moisture vapor away from the skin—keeps you dry and comfortable, prevents overheating, and never feels clammy
• Naturally odor resistant—can be worn again and again odor-free
• Ultrafine fibers feel soft against the skin for itch-free comfort
• 1/2 zip for cooling ventilation
• Princess seams for a flattering fit; feminine shaped hem
• Set-in sleeves for wide range of movement
• Flatlock seams prevent chafing
• Icebreaker merino logo
• Machine wash; dries fast in the shade, but do not tumble dry